Long and Short Scale: Comparison
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The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the two scales are identical. For larger numbers, starting with 109, the two systems differ. For identical names, the long scale proceeds by powers of one million, whereas the short scale proceeds by powers of one thousand. For example, "one billion" means one thousand millions in the short scale, while it means one million millions in the long scale. The long scale system uses additional terms for the intervening values, typically replacing the word ending -ion with -iard.

  • integer powers
  • naming
  • iard

1. Scales

In both short and long scale naming, names are given each multiplication step for increments of the base-10 exponent of three, i.e. for each integer n in the sequence of multipliers 103n. For certain multipliers, including those for all numbers smaller than 109, both systems use the same names. The differences arise from the assignment of identical names to specific values of n, for numbers starting with 109, for which n=3. In the short scale system, the identical names are for n=3, 4, 5, ..., while the long scale places them at n=4, 6, 8, etc.

1.1. Short Scale

In the short scale, billion means a thousand millions (1,000,000,000 which is 109), trillion means one thousand billions (1012), and so on. Thus, an n-illion equals 103n+3.[1]

1.2. Long Scale

In the long scale, billion means one million millions (1012) and trillion means one million billions (1018), and so on. Therefore, an n-illion equals 106n.[2][3] In some languages, the long scale uses additional names for the interleaving multipliers, replacing the ending -ion with -iard; for example, the next multiplier after million is milliard, after billion it is billiard. Hence, an n-iard equals 106n+3.

2. Use

Countries with usage of the long scale include most countries in continental Europe and most that are French-speaking, German-speaking, Spanish-speaking[4] and Portuguese-speaking countries (except Brazil ).

The short scale was never widespread before its universal adoption in the United States. It has been taught in school since the early 1800s. It has since become common in other English-speaking nations and several other countries.

Number names are rendered in the language of the country, but are similar due to shared etymology. Some languages, particularly in East Asia and South Asia, have large number naming systems that are different from both the long and short scales, for example the Indian numbering system.[2][3]

For most of the 19th and 20th centuries, the United Kingdom largely used the long scale,[1][5] whereas the United States used the short scale,[5] so that the two systems were often referred to as British and American in the English language. After several decades of increasing informal British usage of the short scale, in 1974 the government of the UK adopted it,[6] and it is used for all official purposes.[7][8][9][10][11] With very few exceptions,[12] the British usage and American usage are now identical.

The first recorded use of the terms short scale (French: échelle courte) and long scale (French: échelle longue) was by the French mathematician Geneviève Guitel in 1975.[2][3]

To avoid confusion resulting from the coexistence of short and long term in any language, the International System of Units (SI) recommends using the metric prefix to indicate orders of magnitude, but it is only relevant to scientific applications, and not (for example) to finance. Unlike words like billion and trillion, metric prefixes keep the same meaning regardless of the country and the language.

3. Comparison

The relationship between the numeric values and the corresponding names in the two scales can be described as:

 Value in

scientific notation 		  Metric prefix   Value in positional notation   Short scale   Long scale 
Prefix Symbol Name Logic Name Alternative name Logic
100     1 one   one    
101 deca da 10 ten   ten    
102 hecto h 100 hundred   hundred    
103 kilo k 1,000 thousand   thousand    
106 mega M 1,000,000 million 1,000 × 1,0001 million   1,000,0001
109 giga G 1,000,000,000 billion 1,000 × 1,0002 milliard thousand million 1,000 × 1,000,0001
1012 tera T 1,000,000,000,000 trillion 1,000 × 1,0003 billion   1,000,0002
1015 peta P 1,000,000,000,000,000 quadrillion 1,000 × 1,0004 billiard thousand billion 1,000 × 1,000,0002
1018 exa E 1,000,000,000,000,000,000 quintillion 1,000 × 1,0005 trillion   1,000,0003
1021 zetta Z 1,000,000,000,000,000,000,000 sextillion 1,000 × 1,0006 trilliard thousand trillion 1,000 × 1,000,0003
1024 yotta Y 1,000,000,000,000,000,000,000,000 septillion 1,000 × 1,0007 quadrillion   1,000,0004

The relationship between the names and the corresponding numeric values in the two scales can be described as:

 Name   Short scale   Long scale 
 Value in

scientific notation 		  Metric prefix  Logic   Value in

scientific notation 		  Metric prefix  Logic 
 Prefix  Symbol  Prefix  Symbol
million 106 mega M 1,000 × 1,0001 106 mega M 1,000,0001
billion 109 giga G 1,000 × 1,0002 1012 tera T 1,000,0002
trillion 1012 tera T 1,000 × 1,0003 1018 exa E 1,000,0003
quadrillion 1015 peta P 1,000 × 1,0004 1024 yotta Y 1,000,0004
etc. To next named order of magnitude:

multiply by 1,000		 To next named order of magnitude:

multiply by 1,000,000

The root mil in million does not refer to the numeral, 1. The word, million, derives from the Old French, milion, from the earlier Old Italian, milione, an intensification of the Latin word, mille, a thousand. That is, a million is a big thousand, much as a great gross is a dozen gross or 12 × 144 = 1728.[13]

The word milliard, or its translation, is found in many European languages and is used in those languages for 109. However, it is not found in American English, which uses billion, and not used in British English, which preferred to use thousand million before the current usage of billion. The financial term yard, which derives from milliard, is used on financial markets, as, unlike the term billion, it is internationally unambiguous and phonetically distinct from million. Likewise, many long scale countries use the word billiard (or similar) for one thousand long scale billions (i.e., 1015), and the word trilliard (or similar) for one thousand long scale trillions (i.e., 1021), etc.[14][15][16][17][18]

4. History

The existence of the different scales means that care must be taken when comparing large numbers between languages or countries, or when interpreting old documents in countries where the dominant scale has changed over time. For example, British English, French, and Italian historical documents can refer to either the short or long scale, depending on the date of the document, since each of the three countries has used both systems at various times in its history. Today, the United Kingdom officially uses the short scale, but France and Italy use the long scale.

The pre-1974 former British English word billion, post-1961 current French word billion, post-1994 current Italian word bilione, Spanish billón, German Billion, Dutch biljoen, Danish billion, Swedish biljon, Finnish biljoona, Slovenian bilijon, Polish bilion, and European Portuguese word bilião (with a different spelling to the Brazilian Portuguese variant, but in Brazil referring to short scale) all refer to 1012, being long-scale terms. Therefore, each of these words translates to the American English or post-1974 British English word: trillion (1012 in the short scale), and not billion (109 in the short scale).

On the other hand, the pre-1961 former French word billion, pre-1994 former Italian word bilione, Brazilian Portuguese word bilhão, and Welsh word biliwn all refer to 109, being short scale terms. Each of these words translates to the American English or post-1974 British English word billion (109 in the short scale).

The term billion originally meant 1012 when introduced.[13]

  • In long scale countries, milliard was defined to its current value of 109, leaving billion at its original 1012 value and so on for the larger numbers.[13] Some of these countries, but not all, introduced new words billiard, trilliard, etc. as intermediate terms.[14][15][16][17][18]
  • In some short scale countries, milliard was defined to 109 and billion dropped altogether, with trillion redefined down to 1012 and so on for the larger numbers.[13]
  • In many short scale countries, milliard was dropped altogether and billion was redefined down to 109, adjusting downwards the value of trillion and all the larger numbers.

Timeline

 Date  Event
13th century The word million was not used in any language before the 13th century. Maximus Planudes (c. 1260–1305) was among the first recorded users.[13]
Late 14th century
Piers Plowman, a 17th-century copy of the original 14th-century allegorical narrative poem by William Langland. https://handwiki.org/wiki/index.php?curid=1942944
The word million entered the English language. One of the earliest references is William Langland's Piers Plowman (written c. 1360–1387 in Middle English),[13] with
Coueyte not his goodes

For millions of moneye

Translation:

Covet not his goods

for millions of money
1475 French mathematician Jehan Adam, writing in Middle French, recorded the words bymillion and trimillion as meaning 1012 and 1018 respectively in a manuscript Traicté en arismetique pour la practique par gectouers, now held in the Bibliothèque Sainte-Geneviève in Paris.[19][20][21]
... item noctes que le premier greton dembas vault ung, le second vault dix, le trois vault cent, le quart vult [sic] mille, le Ve vault dix M, le VIe vault cent M, le VIIe vault Milion, Le VIIIe vault dix Million, Le IXe vault cent Millions, Le Xe vault Mil Millions, Le XIe vault dix mil Millions, Le XIIe vault Cent mil Millions, Le XIIIe vault bymillion, Le XIIIIe vault dix bymillions, Le XVe vault cent mil [sic] bymillions, Le XVIe vault mil bymillions, Le XVIIe vault dix Mil bymillions, Le XVIIIe vault cent mil bymillions, Le XIXe vault trimillion, Le XXe vault dix trimillions ...

Translation:

... Item note that the first counter from the bottom is worth one, the 2nd is worth ten, the 3rd is worth one hundred, the 4th is worth one thousand, the 5th is worth ten thousand, the 6th is worth one hundred thousand, the 7th is worth a million, the 8th is worth ten millions, the 9th is worth one hundred millions, the 10th is worth one thousand millions, the 11th is worth ten thousand millions, the 12th is worth one hundred thousand million, the 13th is worth a bymillion, the 14th is worth ten bymillions, the 15th is worth one [hundred] bymillions, the 16th is worth one thousand bymillions, the 17th is worth ten thousand bymillions, the 18th is worth hundred thousand bymillions, the 19th is worth a trimillion, the 20th is worth ten trimillions ...
1484
Le Triparty en la Science des Nombres par Maistre Nicolas Chuquet Parisien

an extract from Chuquet's original 1484 manuscript. https://handwiki.org/wiki/index.php?curid=1521584
French mathematician Nicolas Chuquet, in his article Le Triparty en la Science des Nombres par Maistre Nicolas Chuquet Parisien,[22][23][24] used the words byllion, tryllion, quadrillion, quyllion, sixlion, septyllion, ottyllion, and nonyllion to refer to 1012, 1018, ... 1054. Most of the work was copied without attribution by Estienne de La Roche and published in his 1520 book,
  •  
  • São Tomé and Príncipe

Spanish-speaking

106, millón; 109, mil millones or millardo; 1012, billón; etc.

Most Spanish-language countries and regions use the long scale, for example:[69][70][71]

5.6. Notes on Current Usage

Short scale

  1. ↑ English language countries: Apart from the United States, the long scale was used for centuries in many English language countries before being superseded in recent times by short scale usage. Because of this history, some long scale use persists[12] and the official status of the short scale in anglophone countries other than the UK and US is sometimes obscure.
  2. ↑ Australian usage: In Australia, education, media outlets, and literature all use the short scale in line with other English-speaking countries. The current recommendation by the Australian Government Department of Finance and Deregulation (formerly known as AusInfo), and the legal definition, is the short scale.[45] As recently as 1999, the same department did not consider short scale to be standard, but only used it occasionally. Some documents use the term thousand million for 109 in cases where two amounts are being compared using a common unit of one 'million'.
  3. ↑ Filipino usage: Some short-scale words have been adopted into Filipino.
  4. triliun
  5. are not very familiar to Indonesians.
  6. [
  7. 61
  8. ]

Long scale

  1. ↑ French usage: France, with Italy, was one of two European countries which converted from the long scale to the short scale during the 19th century, but returned to the original long scale during the 20th century. In 1961, the French Government confirmed their long scale status.[37][67][68] However the 9th edition of the dictionary of the Académie française describes billion as an outdated synonym of milliard, and says that the new meaning of 1012 was decreed in 1961, but never caught on.[84]
  2. are more common.
  3. [
  4. 18]

Both long and short scale

  1. ↑
  2. ↑
  3. Canadian usage: Both scales are in use currently in Canada. English-speaking regions use the short scale exclusively, while French-speaking regions use the long scale, though the Canadian government standards website recommends that in French billion and trillion be avoided, recommending milliard for 109, and mille milliards (a thousand milliards) for 1012.[
  4. Indian, Pakistani and Bangladeshi usage
  5. 86]
  6. ↑ Spanish language countries: Spanish-speaking countries sometimes use millardo (milliard)[70] for 109, but mil millones (thousand millions) is used more frequently. The word billón is sometimes used in the short scale sense in those countries more influenced by the United States, where "billion" means "one thousand millions". The usage of billón to mean "one thousand millions", controversial from the start, was denounced by the Royal Spanish Academy as recently as 2010,[71] but was finally accepted in a later version of the official dictionary as standard usage among educated Spanish speakers in the United States (including Puerto Rico).[85]
  7. ↑ Esperanto language usage: The Esperanto language words biliono, triliono etc. used to be ambiguous, and both long and short scale were used and presented in dictionaries. The current edition of the main Esperanto dictionary PIV however recommends the long scale meanings, as does the grammar PMEG.[73] Ambiguity may be avoided by the use of the unofficial but generally recognised suffix -iliono, whose function is analogous to the long scale, i.e. it is appended to a (single) numeral indicating the power of a million, e.g. duiliono (from du meaning "two") = biliono = 1012, triiliono = triliono = 1018, etc. following the 1×106X long scale convention. Miliardo is an unambiguous term for 109, and generally the suffix -iliardo, for values 1×106X+3, for example triliardo = 1021 and so forth.
  8. ↑
  9. ↑
  10. British usage: Billion has meant 109 in most sectors of official published writing for many years now. The UK government, the BBC, and most other broadcast or published mass media, have used the short scale in all contexts since the mid-1970s.[6
  11. Italian usage: Italy, with France, was one of the two European countries which partially converted from the long scale to the short scale during the 19th century, but returned to the original long scale in the 20th century. In 1994, the Italian Government confirmed its long scale status.[18] In Italian, the word bilione
  12. : Outside of financial media, the use of billion by Bangladeshi, Indian and Pakistani English speakers highly depends on their educational background. Some may continue to use the traditional British long scale. In everyday life, Bangladeshis, Indians and Pakistanis largely use their own common number system, commonly referred to as the Indian numbering system – for instance, Bangladeshi, Pakistani, and Indian English commonly use the words lakh to denote 100 thousand, crore to denote ten million (i.e. 100 lakhs) and arab to denote thousand million.[89
  13. ↑ South African usage: South Africa uses both the long scale (in Afrikaans and sometimes English) and the short scale (in English). Unlike the 1974 UK switch, the switch from long scale to short scale took time. (As of 2011) most English language publications use the short scale. Some Afrikaans publications briefly attempted usage of the "American System" but that has led to comment in the papers[87] and has been disparaged by the "Taalkommissie" (The Afrikaans Language Commission of the South African Academy of Science and Art)[88] and has thus, to most appearances, been abandoned. ][7][9][48]
  15. officially means 1012,
  16.  
  17. trilione means 1018, etc.. Colloquially, bilione[75] can mean both 109 and 1012; trilione can mean both 1012 and (rarer) 1018 and so on. Therefore, in order to avoid ambiguity, they are seldom used. Forms such as miliardo (milliard) for 109, mille miliardi (a thousand milliards) for 1012, un milione di miliardi (a million milliards) for 1015, un miliardo di miliardi (a milliard of milliards) for 1018, mille miliardi di miliardi (a thousand milliard of milliards) for 1021
  18. Before the widespread use of billion for 109, UK usage generally referred to thousand million rather than milliard.[10] The long scale term milliard, for 109, is obsolete in British English, though its derivative, yard, is still used as slang in the London money, foreign exchange, and bond markets.
  19. ↑ American usage: In the United States, the short scale has been taught in school since the early 19th century. It is therefore used exclusively.[50][51]
  20. ↑ Arabic language countries: Most Arabic-language countries use: 106, مليون million; 109, مليار milyar; 1012, ترليون trilyon; etc.[53][54]
  21. ↑ Estonian usage: Biljon is used due to English influences and is less common than miljard.
  22. ↑ Indonesian usage: Large numbers are common in Indonesia, in part because its currency (rupiah) is generally expressed in large numbers (the lowest common circulating denomination is Rp100 with Rp1000 is considered as base unit). The term juta, equivalent to million (106), is generally common in daily life. Indonesia officially employs the term miliar (derived from the long scale Dutch word miljard) for the number 109, with no exception. For 1012 and greater, Indonesia follows the short scale, thus 1012 is named triliun. The term seribu miliar (a thousand milliards) or more rarely sejuta juta (a million millions) or sejuta berkali-kali (a millions after a million or a millions over a million) are also used for 1012 less often. Terms greater than
L'arismetique
.
[
22
] Chuquet's original article was rediscovered in the 1870s and then published for the first time in 1880.
... Item lon doit savoir que ung million vault


mille milliers de unitez, et ung byllion vault mille


milliers de millions, et [ung] tryllion vault mille milliers


de byllions, et ung quadrillion vault mille milliers de


tryllions et ainsi des aultres : Et de ce en est pose ung


exemple nombre divise et punctoye ainsi que devant est


dit, tout lequel nombre monte 745324 tryllions


804300 byllions 700023 millions 654321.


Exemple : 745324'8043000'700023'654321 ...
[sic]

Translation:

...Item: one should know that a million is worth

a thousand thousand units, and a byllion is worth a thousand

thousand millions, and tryllion is worth a thousand thousand

byllions, and a quadrillion is worth a thousand thousand

tryllions, and so on for the others. And an example of this follows,

a number divided up and punctuated as previously

described, the whole number being 745324 tryllions,

804300 byllions 700023 millions 654321.

Example: 745324'8043000'700023'654321 ... [sic]

The extract from Chuquet's manuscript, the transcription and translation provided here all contain an original mistake: one too many zeros in the 804300 portion of the fully written out example: 745324'8043000 '700023'654321 ...
1516
 
Guilielmus Budaeus or Guillaume Budé (1467–1540). https://handwiki.org/wiki/index.php?curid=1575453
French mathematician Budaeus (Guillaume Budé), writing in Latin, used the term milliart to mean "ten myriad myriad" or 109 in his book De Asse et partibus eius Libri quinque.[25]
.. hoc est decem myriadum myriadas:quod vno verbo nostrates abaci studiosi Milliartum appellant:quasi millionum millionem

Translation:

.. this is ten myriad myriads, which in one word our students of numbers call Milliart, as if a million millions
1549 The influential French mathematician Jacques Pelletier du Mans used the name milliard (or milliart) to mean 1012, attributing the term to the earlier usage by Guillaume Budé[25]
17th century With the increased usage of large numbers, the traditional punctuation of large numbers into six-digit groups evolved into three-digit group punctuation. In some places, the large number names were then applied to the smaller numbers, following the new punctuation scheme. Thus, in France and Italy, some scientists then began using billion to mean 109, trillion to mean 1012, etc.[26] This usage formed the origins of the later short scale. The majority of scientists either continued to say thousand million or changed the meaning of the Pelletier term, milliard, from "million of millions" down to "thousand million".[13] This meaning of milliard has been occasionally used in England,[5] but was widely adopted in France, Germany, Italy and the rest of Europe, for those keeping the original long scale billion from Adam, Chuquet and Pelletier.
1676 The first published use of milliard as 109 occurred in the Netherlands.[13][27]
.. milliart/ofte duysent millioenen..

Translation:

..milliart / also thousand millions..
18th century The short-scale meaning of the term billion was brought to the British American colonies. As early as 1762 (and through at least the early 20th century), the dictionary of the Académie française defined billion as a term of arithmetic meaning a thousand millions.[28][29][30][31]
1729 The first American appearance of the short scale value of billion as 109 was published in the Greenwood Book of 1729, written anonymously by Prof. Isaac Greenwood of Harvard College[13]
Early 19th century France widely converted to the short scale, and was followed by the U.S., which began teaching it in schools. Many French encyclopedias of the 19th century either omitted the long scale system or called it "désormais obsolète", a now obsolete system. Nevertheless, by the mid 20th century France would officially convert back to the long scale.
1926
A Dictionary of Modern English Usage

by H. W. Fowler. https://handwiki.org/wiki/index.php?curid=1158087
H. W. Fowler's A Dictionary of Modern English Usage[5] noted
It should be remembered that "billion" does not mean in American use (which follows the French) what it means in British. For to us it means the second power of a million, i.e. a million millions (1,000,000,000,000); for Americans it means a thousand multiplied by itself twice, or a thousand millions (1,000,000,000), what we call a milliard. Since billion in our sense is useless except to astronomers, it is a pity that we do not conform.

Although American English usage did not change, within the next 50 years French usage changed from short scale to long and British English usage changed from long scale to short.
1948 The 9th General Conference on Weights and Measures received requests to establish an International System of Units. One such request was accompanied by a draft French Government discussion paper, which included a suggestion of universal use of the long scale, inviting the short-scale countries to return or convert.[32] This paper was widely distributed as the basis for further discussion. The matter of the International System of Units was eventually resolved at the 11th General Conference in 1960. The question of long scale versus short scale was not resolved and does not appear in the list of any conference resolutions.[32][33]
1960 The 11th General Conference on Weights and Measures adopted the International System of Units (SI), with its own set of numeric prefixes.[34] SI is therefore independent of the number scale being used. SI also notes the language-dependence of some larger-number names and advises against using ambiguous terms such as billion, trillion, etc.[35] The National Institute of Standards and Technology within the US also considers that it is best that they be avoided entirely.[36]
1961 The French Government confirmed their official usage of the long scale in the Journal officiel (the official French Government gazette).[37]
1974
British prime minister Harold Wilson

(1916–1995). https://handwiki.org/wiki/index.php?curid=1792807
British prime minister Harold Wilson explained in a written answer to the House of Commons that UK government statistics would from then on use the short scale.[7] Hansard,[6] for 20 December 1974, reported it
Mr. Maxwell-Hyslop asked the Prime Minister whether he would make it the practice of his administration that when Ministers employ the word 'billion' in any official speeches, documents, or answers to Parliamentary Questions, they will, to avoid confusion, only do so in its British meaning of 1 million million and not in the sense in which it is used in the United States of America, which uses the term 'billion' to mean 1,000 million.

  •  
  • Argentina
  •  
  • Bolivia
  •  
  • Chile
  •  
  • Colombia
  •  
  • Costa Rica
  •  
  • Cuba
  •  
  • Dominican Republic
  •  
  • Ecuador
  •  
  • El Salvador
  •  
  • Equatorial Guinea
  •  
  • Guatemala (
  • millardo
  • )
  •  
  • Honduras (
  • millardo
  • )
  •  Mexico (mil millones or millardo)
  •  Nicaragua (mil millones or millardo)
  •  Panama (mil millones or millardo)
  •  Paraguay
  •  Peru (mil millones)
  •  Puerto Rico see Using both below
  •  Spain (millardo or typ. mil millones)
  •  Uruguay
  •  Venezuela

Other long scale

106, one million; 109, one milliard or one thousand million; 1012, one billion; etc.

Some examples of long scale use, and the words used for 109 and 1012, are

  •  Andorra (Catalan: miliard or typ. mil milions, bilió)
  •  Bosnia and Herzegovina (Bosnian: milijarda, bilion; Croatian: milijarda, bilijun, Serbian: милијарда milijarda
Greece
Calque of the short scale
Names of the short scale have not been loaned but calqued into Greek, based on the native Greek word for million,
εκατομμύριο
ekatommyrio
("hundred-myriad", i.e. 100×10000):
  • δισεκατομμύριο
  • disekatommyrio "bi+hundred-myriad" = 109 (short scale billion)
  • τρισεκατομμύριο trisekatommyrio "tri+hundred-myriad" = 1012 (short scale trillion)
  • τετράκις εκατομμύριο tetrakis ekatommyrio "quadri+hundred-myriad" = 1015 (short scale quadrillion), and so on.[83]
Laos Lao numerals Traditional system
Mongolia Mongolian numerals Traditional myriad system for the larger numbers; special words up to 1067
Sri Lanka
  • Sinhala numerals
  • Tamil numerals
 Traditional systems

Neither long nor short scale

  1. ]
The Prime Minister: No. The word 'billion' is now used internationally to mean 1,000 million and it would be confusing if British Ministers were to use it in any other sense. I accept that it could still be interpreted in this country as 1 million million and I shall ask my colleagues to ensure that, if they do use it, there should be no ambiguity as to its meaning.

The BBC and other UK mass media quickly followed the government's lead within the UK.

During the last quarter of the 20th century, most other English-speaking countries (Ireland, Australia, New Zealand, South Africa, Zimbabwe, etc.) either also followed this lead or independently switched to the short scale use. However, in most of these countries, some limited long scale use persists and the official status of the short scale use is not clear.

1975
French mathematician Geneviève Guitel introduced the terms
long scale
(French:
échelle longue
) and
short scale
(French: échelle courte) to refer to the two numbering systems.[2][3]
1994 The Italian Government confirmed their official usage of the long scale.[18]

As large numbers in natural sciences are usually represented by metric prefixes, scientific notation or otherwise, the most commonplace occurrence of large numbers represented by long or short scale terms is in finance. The following table includes some historic examples related to hyper-inflation and other financial incidents.

Timeline

 

 Date  Event
1923
10 Milliarden Mark (1010 mark) stamp. https://handwiki.org/wiki/index.php?curid=1594258
1000 Mark German banknote, over-stamped in red with "Eine Milliarde Mark" (109 mark). https://handwiki.org/wiki/index.php?curid=1416395


Using German banknotes as wallpaper following the 1923 hyperinflation. https://handwiki.org/wiki/index.php?curid=1610046

German hyperinflation in the 1920s Weimar Republic caused 'Eintausend Mark' (1000 Mark = 103 Mark) German banknotes to be over-stamped as 'Eine Milliarde Mark' (109 Mark). This introduced large-number names to the German populace.

The Mark or Papiermark was replaced at the end of 1923 by the Rentenmark at an exchange rate of

1 Rentenmark = 1 billion (long scale) Papiermark = 1012 Papiermark = 1 trillion (short scale) Papiermark
1946
1020 Hungarian pengő banknote issued in 1946. https://handwiki.org/wiki/index.php?curid=1689441

Hyperinflation in Hungary in 1946 led to the introduction of the 1020 pengő banknote.

100 million b-pengő (long scale) = 100 trillion (long scale) pengő = 1020 pengő = 100 quintillion (short scale) pengő.

On 1 August 1946, the forint was introduced at a rate of

1 forint = 400 quadrilliard (long scale) pengő = 4 × 1029 pengő = 400 octillion (short scale) pengő.
1993
5 × 1011 Yugoslav dinar banknotes from 1993. https://handwiki.org/wiki/index.php?curid=1778851

Hyperinflation in Yugoslavia led to the introduction of 5 × 1011 dinar banknotes.

500 thousand million (long scale) dinars = 5 × 1011 dinar banknotes = 500 billion (short scale) dinars.

The later introduction of the new dinar came at an exchange rate of

1 new dinar = 1 × 1027 dinars = ~1.3 × 1027 pre 1990 dinars.
2009
1014 Zimbabwean dollars banknote from 2009. https://handwiki.org/wiki/index.php?curid=1653469

Hyperinflation in Zimbabwe led to banknotes of 1014 Zimbabwean dollars, marked "One Hundred Trillion Dollars" (short scale), being issued in 2009, shortly ahead of the currency being abandoned[38][39][40] after a final redenomination to the 'fourth dollar'. From 2013 to 2019 when the RTGS Dollar entered use, no new currency was announced, and so foreign currencies were used instead.

100 trillion (short scale) Zimbabwean dollars = 1014 Zimbabwean dollars = 100 billion (long scale) Zimbabwean dollars = 1027 pre-2006 Zimbabwean dollars = 1 quadrilliard (long scale) pre-2006 Zimbabwean dollars.
2013 (As of October 2013), the combined total public debt of the United States stood at United States dollar 17.078 trillion.[41][42]

17 trillion (short scale) US Dollars = 1.7 × 1013 US Dollars = 17 billion (long scale) US Dollars

5. Current Usage

5.1. Short Scale Users

English-speaking

106, one million; 109, one billion; 1012, one trillion; etc.

Most English-language countries and regions use the short scale with 109 being billion. For example:[43]

  •  American Samoa
  •  Anguilla
  •  Antigua and Barbuda
  •  Australia [44][45]
  •  Bahamas
  •  Barbados
  •  Belize (English-speaking)
  •  Bermuda
  •  Botswana (English-speaking)
  •  British Virgin Islands
  •  Cameroon (English-speaking)
  •  Canada (English-speaking) see Using both below
  •  Cayman Islands
  •  Cook Islands
  •  Dominica
  •  Eritrea
  •  Eswatini (formerly Swaziland)
  •  Ethiopia
  •  Falkland Islands
  •  Fiji
  •  Gambia
  •  Ghana (English-speaking)
  •  Gibraltar
  •  Grenada
  •  Guam
  •  Guyana (English-speaking)
  •  Hong Kong (English-speaking)
  •  Ireland (English-speaking, Irish: billiún, trilliún)
  •  Isle of Man
  •  Jamaica
  •  Jersey
  •  Kenya (English-speaking)
  •  Kiribati
  •  Lesotho
  •  Liberia
  •  Malawi (English-speaking)
  •  Malaysia (English-speaking; Malay: bilion billion, trilion trillion)
  •  Malta (English-speaking; Maltese: biljun, triljun
  •  Marshall Islands
  •  Mauritius (English speaking) see Using both below
  •  Federated States of Micronesia
  •  Montserrat
  •  Nauru
  •  New Zealand
  •  Nigeria (English-speaking)
  •  Niue
  •  Norfolk Island
  •  Northern Mariana Islands
  •  Palau
  •  Papua New Guinea (English-speaking)
  •  Philippines (English-speaking) [46]
  •  Pitcairn Islands
  •  Rwanda
  •  Saint Helena, Ascension and Tristan da Cunha
  •  Saint Kitts and Nevis
  •  Saint Lucia
  •  Saint Vincent and the Grenadines
  •  Samoa
  •  Seychelles (English speaking) see Using both below
  •  Sierra Leone
  •  Singapore (English-speaking)
  •  Solomon Islands
  •  South Georgia and the South Sandwich Islands
  •  South Sudan (English-speaking)
  •  Tanzania (English-speaking)
  •  Tokelau
  •  Tonga
  •  Trinidad and Tobago
  •  Turks and Caicos Islands
  •  Tuvalu
  •  Uganda (English-speaking)
  •  United Kingdom (see also Wales below) [6][7][9][10][47][48]
  •  United States[49][50][51]
  •  Vanuatu (English speaking) see Using both below
  •  Zambia (English-speaking)
  •  Zimbabwe (English-speaking)[38][39][40]

Arabic-speaking

106, مَلْيُوْن malyoon; 109, مِلْيَار milyar; 1012, تِرِلْيُوْن tirilyoon; etc.

Most Arabic-language countries and regions use the short scale with 109 being مليار milyar, except for a few countries like Saudi Arabia and the UAE which use the word بليون billion for 109. For example:[52][53][54]

  •  Algeria
  •  Bahrain
  •  Chad
  •  Comoros
  •  Djibouti
  •  Egypt
  •  Eritrea
  •  Iraq
  •  Jordan
  •  Kuwait
  •  Lebanon
  •  Libya
  •  Mauritania
  •  Morocco
  •  Oman
  •  Palestine
  •  Qatar
  •  Saudi Arabia
  •  Somalia
  •  Sudan
  •  Syria
  •  Tunisia
  •  United Arab Emirates
  •  Yemen

Other short scale

106, one million; 109, one milliard or one billion; 1012, one trillion; etc.

Other countries also use a word similar to trillion to mean 1012, etc. Whilst a few of these countries like English use a word similar to billion to mean 109, most like Arabic have kept a traditional long scale word similar to milliard for 109. Some examples of short scale use, and the words used for 109 and 1012, are

  •  Afghanistan (Dari: میلیارد milyard or بیلیون billion, تریلیون trillion, Pashto: میلیارد milyard, بیلیون billion, تریلیون trillion)
  •  Albania (miliard, trilion)[55]
  •  Armenia ( միլիարդ miliard, տրիլիոն trilion)
  •  Azerbaijan (milyard, (trilyon)
  •  Belarus (мільярд milyard, трыльён trilyon)
  •  Brazil (Brazilian Portuguese: bilhão, trilhão)
  •  Brunei (Malay: bilion, trilion)
  •  Bulgaria (милиард miliard, трилион trilion)
  •  Cyprus (Greek: δισεκατομμύριο disekatommyrio, τρισεκατομμύριο trisekatommyrio, Turkish: milyar, trilyon)
  •  Estonia (miljard or biljon[56], triljon)[57][58][59]
  •  Georgia (მილიარდი miliardi, ტრილიონი trilioni)
  •  Indonesia (miliar, triliun)[60][61]
  •  Israel (Hebrew: מיליארד milyard, טריליון trilyon)
  •  Kazakhstan (Kazakh: миллиард milliard, триллион trillion)
  •  Kyrgyzstan (Kyrgyz: миллиард milliard, триллион trillion)
  •  Latvia (miljards, triljons)
  •  Lithuania (milijardas, trilijonas)
  •  Moldova (Romanian:[62] miliard, trilion)
  •  Myanmar (formerly Burma) (Burmese: ဘီလျံ, IPA: [bìljàɰ̃]; ထရီလျံ, [tʰəɹìljàɰ̃])[63]
  •  Namibia (Afrikaans speaking) see Using both below
  •  Puerto Rico (Spanish speaking) see Using both below
  •  Russia (миллиард milliard, триллион trillion)
  •  South Africa (Afrikaans speaking) see Using both below
  •  Tajikistan (Tajik: миллиард milliard, триллион trillion)
  •  Turkey (milyar, trilyon)
  •  Ukraine (мільярд mil'yard, трильйон tryl'yon)
  •  Uzbekistan (Uzbek: milliard, trillion; Russian: миллиард milliard, триллион trillion)
  • Template:WAL (biliwn, triliwn) (In some contexts a paraphrase is needed to resolve ambiguity, as the lenitive of both miliwn and biliwn is the same: filiwn.)

5.2. Long Scale Users

The traditional long scale is used by most Continental European countries and by most other countries whose languages derive from Continental Europe (with the notable exceptions of Albania, Greece, Romania,[62] and Brazil). These countries use a word similar to billion to mean 1012. Some use a word similar to milliard to mean 109, while others use a word or phrase equivalent to thousand millions.

Dutch-speaking

106, miljoen; 109, miljard; 1012, biljoen; etc.

Most Dutch-language countries and regions use the long scale with 109 = miljard, for example:[64][65]

  •  Aruba
  •  Belgium
  •  Netherlands
  •  Suriname

French-speaking

106, million; 109, milliard; 1012, billion; etc.

Most French-language countries and regions use the long scale with 109 = milliard, for example:[66][67][68]

  •  Belgium
  •  Benin
  •  Burkina Faso
  •  Canada (Canadian French) see Using both below
  •  Central African Republic
  •  Democratic Republic of the Congo
  •  Republic of the Congo
  •  France
  •  French Polynesia
  •  Gabon
  •  Guinea
  •  Haiti
  •  Ivory Coast (Côte d'Ivoire)
  •  Mali
  •  Monaco
  •  New Caledonia
  •  Niger
  •  SeTemplate:QC (province of Canada, Canadian French) see Usinegal both below
  •  TogoTemplate:MAF (French portion of St. Martin Island)
  •  Senegal
  •  Togo

German-speaking

106, Million; 109, Milliarde; 1012, Billion; etc.

German-language countries and regions use the long scale with 109 = Milliarde, for example:

  •  Austria
  •  Belgium
  •  Germany[14][15]
  •  Liechtenstein

Portuguese-speaking

106, milhão; 109, mil milhões or milhar de milhões; 1012, bilião

With the notable exception of Brazil, a short scale country, most Portuguese-language countries and regions use the long scale with 109 = mil milhões or milhar de milhões, for example:

  •  Angola
  •  Cape Verde
  •  Guinea-Bissau
  •  Macau
  •  Mozambique
  •  Portugal
  • , билион bilion)
  •  Croatia (milijarda, bilijun)
  •  Czech Republic (miliarda, bilion)
  •  Denmark (milliard, billion)
  •  Esperanto (miliardo, duiliono) [72][73]
  •  Finland (Finnish: miljardi, biljoona; Swedish: miljard, biljon)
  •  Greenland (milliardi, billioni)
  •  Hungary (milliárd, billió or ezermilliárd)
  •  Iceland (milljarður, billjón)
  •  Italy (miliardo, bilione) [18][74][75]
  •  Luxembourg (French: milliard, billion; German: Milliarde, Billion; Luxembourgish: milliard, billioun)
  •  Madagascar (French: milliard, billion; Template:Lang-mg, arivo miliara)
  •  Mauritius (English speaking) see Using both below
  •  Montenegro (Montenegrin: milijarda, bilion)
  •  Namibia (Afrikaans speaking) see Using both below
  • Template:NMK (милијарда milijarda, билион bilion)
  •  Norway (Bokmål: milliard, billion; Nynorsk: milliard, billion)
  •  Poland (miliard, bilion)
  •  Romania[76] (miliard, bilion). There are ambiguities for numbers above 1012.[77]
  •  San Marino (Italian: miliardo, bilione)
  •  Serbia (милијарда milijarda, билион bilion)
  •  Seychelles (English speaking) see Using both below
  •  Slovakia (miliarda, bilión)
  •  Slovenia (milijarda, bilijon)
  •  South Africa (Afrikaans speaking) see Using both below
  •  Sweden (miljard, biljon)
  •   Switzerland (French: milliard, billion; German: Milliarde, Billion; Italian: miliardo, bilione; Romansh: milliarda, billiun[78])
  •  Vanuatu (English speaking) see Using both below

5.3. Using Both

Some countries use either the short or long scales, depending on the internal language being used or the context.

106, one million; 109, either one billion (short scale) or one milliard / thousand million (long scale); 1012, either one trillion (short scale) or one billion (long scale), etc.
Country or territory Short scale usage Long scale usage
Canada[79] Canadian English (109 = billion, 1012 = trillion) Canadian French (109 = milliard, 1012 = billion[80] or mille milliards).
Mauritius;  Seychelles;  Vanuatu English (109 = billion, 1012 = trillion) French (109 = milliard, 1012 = billion)

Namibia

South Africa[81]

 South African English (109 = billion, 1012 = trillion) Afrikaans (109 = miljard, 1012 = biljoen)
Puerto Rico Economic and technical (109 = billón, 1012 = trillón) Latin American export publications (109 = millardo or mil millones, 1012 = billón)

5.4. Using Neither

The following countries use naming systems for large numbers that are not etymologically related to the short and long scales:

Country Number system Naming of large numbers
Bangladesh,India,Maldives,    Nepal,  Pakistan Indian numbering system For everyday use, but short or long scale may also be in use [82]
 Bhutan Dzongkha numerals Traditional system
 Cambodia Khmer numerals Traditional system

People's Republic of China

Republic of China

South Korea

North Korea

Japan

 East Asian numbering system:
  • Chinese numerals
  • Korean numerals
  • Japanese numerals
 Traditional myriad system for the larger numbers; special words and symbols up to 1068
Thailand
Thai numerals Traditional system based on millions
Vietnam Vietnamese numerals Traditional system(s) based on thousands

5.5. By Continent

The long and short scales are both present on most continents, with usage dependent on the language used. Examples include:

Continent Short scale usage Long scale usage
Africa Arabic (Egypt, Libya, Tunisia), English (South Sudan), South African English Afrikaans, French (Benin, Central African Republic, Gabon, Guinea), Portuguese (Angola, Mozambique)
North America American English, Canadian English U.S. Spanish, Canadian French, Mexican Spanish
South America Brazilian Portuguese, English (Guyana) American Spanish, Dutch (Suriname), French (French Guiana)
Antarctica Australian English, British English, New Zealand English, Russian American Spanish (Argentina, Chile), French (France), Norwegian (Norway)
Asia Burmese (Myanmar), Hebrew (Israel), Indonesian, Malaysian English, Philippine English, Kazakh, Uzbek, Kyrgyz Portuguese (East Timor, Macau), Persian (Iran)
Europe British English, Welsh, Estonian, Greek, Latvian, Lithuanian, Russian, Turkish, Ukrainian Danish, Dutch, Finnish, French, German, Icelandic, Italian, Norwegian, Polish, Portuguese, Romanian, Spanish, Swedish and most other languages of continental Europe
Oceania Australian English, New Zealand English French (French Polynesia, New Caledonia)

6. Alternative Approaches

  • In written communications, the simplest solution for moderately large numbers is to write the full amount, for example 1,000,000,000,000 rather than 1 trillion (short scale) or 1 billion (long scale).
  • Combinations of the unambiguous word million, for example: 109 = "one thousand million"; 1012 = "one million million".[90]
  • Scientific notation (also known as standard form or exponential notation, for example 1×109, 1×1010, 1×1011, 1×1012, etc.), or its engineering notation variant (for example 1×109, 10×109, 100×109, 1×1012, etc.), or the computing variant E notation (for example 1e9, 1e10, 1e11, 1e12, etc.). This is the most common practice among scientists and mathematicians, and is both unambiguous and convenient.
  • SI prefixes in combination with SI units, for example, giga for 109 and tera for 1012 can give gigawatt (=109 W) and terawatt (=1012 W). The International System of Units (SI) is independent of whichever scale is being used.[34] Use with non-SI units (e.g. "giga-dollars", "megabucks") is possible. k€ and M€ is frequently encountered, although the official scheme places the Euro sign in front of the value.
  • Engineering notation uses a notation with base 1000 instead of 10, giving it a symbol like χ (for Greek χιλιοι - thousand) or simply k or K, and write 1010 = 10 χ3.

References

  1. British-English usage of 'Billion vs Thousand million vs Milliard'. Google Inc. https://books.google.com/ngrams/graph?content=billion%2Cthousand+million%2Cmilliard&year_start=1808&year_end=1967&corpus=18&smoothing=3&share=. Retrieved 26 April 2014. 
  2. Guitel, Geneviève (1975) (in fr). Histoire comparée des numérations écrites. Paris: Flammarion. pp. 51–52. ISBN 978-2-08-211104-1. 
  3. Guitel, Geneviève (1975). ""Les grands nombres en numération parlée (État actuel de la question)", i.e. "The large numbers in oral numeration (Present state of the question)"" (in fr). Histoire comparée des numérations écrites. Paris: Flammarion. pp. 566–574. ISBN 978-2-08-211104-1. 
  4. "Authoritative [[Real Academia Española|RAE]] dictionary: billón". http://lema.rae.es/drae/. 
  5. Fowler, H. W. (1926). A Dictionary of Modern English Usage. Great Britain: Oxford University Press. pp. 52–53. ISBN 978-0-19-860506-5. https://books.google.com/books?id=hrtIDakUpA4C&q=billion&pg=PT169. 
  6. ""BILLION" (DEFINITION) — HC Deb 20 December 1974 vol 883 cc711W–712W". Hansard Written Answers. Hansard. 20 December 1972. http://hansard.millbanksystems.com/written_answers/1974/dec/20/billion-definition#S5CV0883P0_19741220_CWA_439. 
  7. O'Donnell, Frank (30 July 2004). "Britain's £1 trillion debt mountain – How many zeros is that?". The Scotsman. http://news.scotsman.com/latestnews/Britains-1-trillion-debt-mountain.2550147.jp. 
  8. "Who wants to be a trillionaire?" (in en-GB). BBC News. 7 May 2007. http://news.bbc.co.uk/2/hi/programmes/more_or_less/6625545.stm. 
  9. Comrie, Bernard (24 March 1996). "billion:summary". Linguist List (Mailing list). Retrieved 24 July 2011. http://www.linguistlist.org/issues/7/7-451.html
  10. "Oxford Dictionaries: How many is a billion?". Oxford University Press. https://en.oxforddictionaries.com/explore/how-many-is-a-billion/. 
  11. "Oxford Dictionaries: Billion". Oxford University Press. http://oxforddictionaries.com/definition/billion. 
  12. Nielsen, Ron (2006). The Little Green Handbook. Macmillan Publishers. p. 290. ISBN 978-0-312-42581-4. https://archive.org/details/littlegreenhandb00ronn/page/290. 
  13. Smith, David Eugene (1953). History of Mathematics. II. Courier Dover Publications. pp. 81. ISBN 978-0-486-20430-7. https://books.google.com/books?id=uTytJGnTf1kC&pg=PA81. 
  14. "Wortschatz-Lexikon: Milliarde" (in de). Universität Leipzig: Wortschatz-Lexikon. http://wortschatz.uni-leipzig.de/cgi-bin/wort_www.exe?site=1&Wort=Milliarde. 
  15. "Wortschatz-Lexikon: Billion" (in de). Universität Leipzig: Wortschatz-Lexikon. http://wortschatz.uni-leipzig.de/cgi-bin/wort_www.exe?site=1&Wort=Billion. 
  16. "Wortschatz-Lexikon: Billiarde" (in de). Universität Leipzig: Wortschatz-Lexikon. http://wortschatz.uni-leipzig.de/cgi-bin/wort_www.exe?site=1&Wort=Billiarde. 
  17. "Wortschatz-Lexikon: Trilliarde" (in de). Universität Leipzig: Wortschatz-Lexikon. http://wortschatz.uni-leipzig.de/cgi-bin/wort_www.exe?site=1&Wort=Trilliarde. 
  18. "Direttiva CEE / CEEA / CE 1994 n. 55, p.12" (in it). Italian Government. 21 November 1994. http://www.frareg.com/news/legislazione/ambiente/direttiva_1994_55_CE.pdf. 
  19. Adam, Jehan (1475) (in frm). Traicté en arismetique pour la practique par gectouers... (MS 3143). Paris: Bibliothèque Sainte-Geneviève. 
  20. "HOMMES DE SCIENCE, LIVRES DE SAVANTS A LA BIBLIOTHÈQUE SAINTE-GENEVIÈVE, Livres de savants II" (in fr). Traicté en arismetique pour la practique par gectouers…. Bibliothèque Sainte-Geneviève. 2005. http://www-bsg.univ-paris1.fr/ExposVirtuelles/exposvirtuellesreserves/sciences/savants2.htm. 
  21. Thorndike, Lynn (1926). "The Arithmetic of Jehan Adam, 1475 A.D". The American Mathematical Monthly (Mathematical Association of America) 1926 (January): 24–28. doi:10.2307/2298533.  https://dx.doi.org/10.2307%2F2298533
  22. Chuquet, Nicolas (1880). "Le Triparty en la Science des Nombres par Maistre Nicolas Chuquet Parisien" (in frm). Bulletino di Bibliographia e di Storia delle Scienze Matematische e Fisische (Bologna: Aristide Marre) XIII (1880): 593–594. ISSN 1123-5209. http://www.miakinen.net/vrac/nombres#lettres_zillions. Retrieved 17 July 2011. 
  23. Chuquet, Nicolas (1880). "Le Triparty en la Science des Nombres par Maistre Nicolas Chuquet Parisien" (in frm). miakinen.net. http://www.miakinen.net/vrac/nombres#lettres_zillions. 
  24. Flegg, Graham (23–30 December 1976). "Tracing the origins of One, Two, Three.". New Scientist (Reed Business Information) 72 (1032): 747. ISSN 0262-4079. https://books.google.com/books?id=obHSBCxiJ1YC&pg=PA747. Retrieved 17 July 2011. 
  25. Budaeus, Guilielmus (1516) (in la). De Asse et partibus eius Libri quinque. pp. folio 93. 
  26. Littré, Émile (1873–1874). Dictionnaire de la langue française. Paris, France: L. Hachette. p. 347. http://www.littre.org/definition/billion. "Ce n'est qu'au milieu du XVIIe siècle qu'il fut réglé que les tranches, au lieu d'être de six en six chiffres, seraient de trois en trois chiffres; ce qui revint à diviser par 1000 l'ancien billion, l'ancien trillion, etc. [It was only in the middle of the 17th century that it was settled that the slices, instead of being from six to six digits, would be from three to three digits; which resulted in dividing by 1000 the old billion, the old trillion, and so on.]" 
  27. Houck (1676). Arithmetic. Netherlands. p. 2. 
  28. Dictionnaire de l'académie françoise (4th ed.). Paris, France: Institut de France. 1762. p. 177. https://books.google.com/books?id=0oM-AAAAcAAJ&q=Dictionnaire+de+l'Académie+Française&pg=PA1. 
  29. Dictionnaire de l'Académie française (6th ed.). Paris, France. 1835. p. 189. http://portail.atilf.fr/cgi-bin/dico1look.pl?strippedhw=billion&dicoid=ACAD1835&headword=&dicoid=ACAD1835. 
  30. Dictionnaire de l'Académie française (7th ed.). Paris, France: Institut de France. 1877. p. 182. https://books.google.com/books?id=P2whAQAAMAAJ&q=Dictionnaire+de+l'Académie+Française&pg=PR23. 
  31. Dictionnaire de l'Académie française (8th ed.). Paris, France: Institut de France. 1932–1935. p. 144. http://portail.atilf.fr/cgi-bin/dico1look.pl?strippedhw=billion&headword=&docyear=ALL&dicoid=ACAD1932&articletype=1. 
  32. "Resolution 6 of the 9th meeting of the CGPM (1948)". BIPM. http://www.bipm.org/en/CGPM/db/9/6/. 
  33. "Resolution 6 of the 10th meeting of the CGPM (1954)". BIPM. http://www.bipm.org/en/CGPM/db/10/6/. 
  34. "Resolution 12 of the 11th meeting of the CGPM (1960)". BIPM. http://www.bipm.org/jsp/en/ViewCGPMResolution.jsp?CGPM=11&RES=12. 
  35. The International System of Units (SI) (8 ed.). BIPM. May 2006. pp. 134 / 5.3.7 Stating values of dimensionless quantities, or quantities of dimension one. ISBN 92-822-2213-6. http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf. 
  36. Thompson, Ambler; Taylor, Barry N. (30 March 2008). Guide for the Use of the International System of Units (SI), NIST SP – 811. US: National Institute of Standards and Technology. p. 21. https://www.nist.gov/manuscript-publication-search.cfm?pub_id=200349. Retrieved 13 September 2014. 
  37. "Décret 61-501" (in fr). Journal Officiel (French Government): 4587 note 3a, and erratum on page 7572. 11 August 1961. http://www.ensmp.net/pdf/1961/decr-61-0501.pdf. Retrieved 31 January 2008. 
  38. "BBC News: Zimbabweans play the zero game". BBC. 23 July 2008. http://news.bbc.co.uk/1/hi/world/africa/7516874.stm. 
  39. "BBC News: Zimbabwe rolls out Z$100tr note". BBC. 16 January 2009. http://news.bbc.co.uk/1/hi/7832601.stm. 
  40. "BBC News: Zimbabwe abandons its currency". BBC. 29 January 2009. http://news.bbc.co.uk/1/hi/7859033.stm. 
  41. "The Debt to the Penny and Who Holds It". US Government. http://www.treasurydirect.gov/NP/BPDLogin?application=np. 
  42. "Economic infographics". BTC. http://demonocracy.info/. 
  43. English language countries: Apart from the United States, the long scale was used for centuries in many English language countries before being superseded in recent times by short scale usage. Because of this history, some long scale use persists[12] and the official status of the short scale in anglophone countries other than the UK and US is sometimes obscure.
  44. Australian usage: In Australia, education, media outlets, and literature all use the short scale in line with other English-speaking countries. The current recommendation by the Australian Government Department of Finance and Deregulation (formerly known as AusInfo), and the legal definition, is the short scale.[43] As recently as 1999, the same department did not consider short scale to be standard, but only used it occasionally. Some documents use the term thousand million for 109 in cases where two amounts are being compared using a common unit of one 'million'.
  45. "RBA: Definition of billion". Reserve Bank of Australia. http://www.rba.gov.au/glossary/index.html?search=billion. 
  46. Filipino usage: Some short-scale words have been adopted into Filipino.
  47. British usage: Billion has meant 109 in most sectors of official published writing for many years now. The UK government, the BBC, and most other broadcast or published mass media, have used the short scale in all contexts since the mid-1970s.[6][7][44][9] Before the widespread use of billion for 109, UK usage generally referred to thousand million rather than milliard.[10] The long scale term milliard, for 109, is obsolete in British English, though its derivative, yard, is still used as slang in the London money, foreign exchange, and bond markets.
  48. "BBC News: Who wants to be a trillionaire?". BBC. 7 May 2007. http://news.bbc.co.uk/1/hi/programmes/more_or_less/6625545.stm. 
  49. American usage: In the United States, the short scale has been taught in school since the early 19th century. It is therefore used exclusively.[45][46]
  50. "billion". billion. Cambridge University Press. http://dictionaries.cambridge.org/define.asp?key=billion*1+0&dict=A. Retrieved 21 August 2011. 
  51. "trillion". Cambridge Dictionaries Online. Cambridge University Press. http://dictionaries.cambridge.org/define.asp?key=trillion*1+0&dict=A. 
  52. Arabic language countries: Most Arabic-language countries use: 106, مليون million; 109, مليار milyar; 1012, ترليون trilyon; etc.[47][48]
  53. "Al Jazem English-Arabic online dictionary: Billion". Al Jazem English-Arabic online dictionary. Encyclopædia Britannica. http://www.aljazem.com/en/billion. 
  54. "Al Jazem English-Arabic online dictionary:Trillion". Al Jazem English-Arabic online dictionary. Encyclopædia Britannica. http://www.aljazem.com/en/trillion. 
  55. Qeli, Albi. "An English-Albanian Dictionary". Albi Qeli, MD. http://www.argjiro.net/fjalor/index.php. 
  56. Estonian usage: Biljon is used due to English influences and is less common than miljard.
  57. "Eesti õigekeelsussõnaraamat ÕS 2006: miljard" (in et). Institute of the Estonian Language (Eesti Keele Instituut). 2006. http://www.eki.ee/dict/qs/index.cgi?Q=miljard&F=M. 
  58. "Eesti õigekeelsussõnaraamat ÕS 2013: biljon" (in et). Institute of the Estonian Language (Eesti Keele Instituut). 2013. http://www.eki.ee/dict/qs/index.cgi?Q=biljon&F=M. 
  59. "Eesti õigekeelsussõnaraamat ÕS 2006: triljon" (in et). Institute of the Estonian Language (Eesti Keele Instituut). 2006. http://www.eki.ee/dict/qs/index.cgi?Q=triljon&F=M. 
  60. Indonesian usage: Large numbers are common in Indonesia, in part because its currency (rupiah) is generally expressed in large numbers (the lowest common circulating denomination is Rp100 with Rp1000 is considered as base unit). The term juta, equivalent to million (106), is generally common in daily life. Indonesia officially employs the term miliar (derived from the long scale Dutch word miljard) for the number 109, with no exception. For 1012 and greater, Indonesia follows the short scale, thus 1012 is named triliun. The term seribu miliar (a thousand milliards) or more rarely sejuta juta (a million millions) or sejuta berkali-kali (a millions after a million or a millions over a million) are also used for 1012 less often. Terms greater than triliun are not very familiar to Indonesians.[53]
  61. Robson S. O. (Stuart O.), Singgih Wibisono, Yacinta Kurniasih. Javanese English dictionary Tuttle Publishing: 2002, ISBN:0-7946-0000-X, 821 pages
  62. Avram, Mioara; Sala, Marius (2000), May We Introduce the Romanian Language to You?, Editura Fundatiei Culturale Române, p. 151, ISBN 9789735772246, "the numeral miliard "billion"" 
  63. "Britain to Reduce $4 billion from Defence" (in my). Bi-Weekly Eleven (Yangon) 3 (30). 15 October 2010. 
  64. "De Geïntegreerde Taal-Bank: miljard" (in nl). Instituut voor Nederlandse Lexicologie. http://www.wnt.inl.nl/iWDB/search?actie=article&wdb=WFT&id=63043&lemmodern=miljard. 
  65. "De Geïntegreerde Taal-Bank: biljoen" (in nl). Instituut voor Nederlandse Lexicologie. http://gtb.inl.nl/iWDB/search?actie=article&wdb=WFT&id=8253&lemmodern=biljoen. 
  66. French usage: France, with Italy, was one of two European countries which converted from the long scale to the short scale during the 19th century, but returned to the original long scale during the 20th century. In 1961, the French Government confirmed their long scale status.[37][58][59] However the 9th edition of the dictionary of the Académie française describes billion as an outdated synonym of milliard, and says that the new meaning of 1012 was decreed in 1961, but never caught on.[60]
  67. "French Larousse: milliard" (in fr). Éditions Larousse. http://www.larousse.com/en/dictionaries/french/milliard. 
  68. "French Larousse: billion" (in fr). Éditions Larousse. http://www.larousse.com/en/dictionaries/french/billion. 
  69. Spanish language countries: Spanish-speaking countries sometimes use millardo (milliard)[61] for 109, but mil millones (thousand millions) is used more frequently. The word billón is sometimes used in the short scale sense in those countries more influenced by the United States, where "billion" means "one thousand millions". The usage of billón to mean "one thousand millions", controversial from the start, was denounced by the Royal Spanish Academy as recently as 2010,[62] but was finally accepted in a later version of the official dictionary as standard usage among educated Spanish speakers in the United States (including Puerto Rico).[63]
  70. "Diccionario Panhispánico de Dudas: millardo" (in es). Real Academia Española. http://buscon.rae.es/dpdI/SrvltConsulta?lema=millardo. 
  71. "Diccionario Panhispánico de Dudas: billon" (in es). Real Academia Española. http://buscon.rae.es/dpdI/SrvltConsulta?lema=billon. 
  72. Esperanto language usage: The Esperanto language words biliono, triliono etc. used to be ambiguous, and both long and short scale were used and presented in dictionaries. The current edition of the main Esperanto dictionary PIV however recommends the long scale meanings, as does the grammar PMEG.[64] Ambiguity may be avoided by the use of the unofficial but generally recognised suffix -iliono, whose function is analogous to the long scale, i.e. it is appended to a (single) numeral indicating the power of a million, e.g. duiliono (from du meaning "two") = biliono = 1012, triiliono = triliono = 1018, etc. following the 1×106X long scale convention. Miliardo is an unambiguous term for 109, and generally the suffix -iliardo, for values 1×106X+3, for example triliardo = 1021 and so forth.
  73. Wennergren, Bertilo (8 March 2008). "Plena Manlibro de Esperanta Gramatiko" (in eo). http://bertilow.com/pmeg/. 
  74. Italian usage: Italy, with France, was one of the two European countries which partially converted from the long scale to the short scale during the 19th century, but returned to the original long scale in the 20th century. In 1994, the Italian Government confirmed its long scale status.[18] In Italian, the word bilione officially means 1012, trilione means 1018, etc.. Colloquially, bilione[65] can mean both 109 and 1012; trilione can mean both 1012 and (rarer) 1018 and so on. Therefore, in order to avoid ambiguity, they are seldom used. Forms such as miliardo (milliard) for 109, mille miliardi (a thousand milliards) for 1012, un milione di miliardi (a million milliards) for 1015, un miliardo di miliardi (a milliard of milliards) for 1018, mille miliardi di miliardi (a thousand milliard of milliards) for 1021 are more common.[18]
  75. "Italian-English Larousse: bilione". Éditions Larousse. http://www.larousse.com/en/dictionaries/italian-english/bilione/5726. 
  76. Institutul de Lingvistică „Iorgu Iordan – Alexandru Rosetti" al Academiei Române (2012), Dicționarul explicativ al limbii române (ediția a II-a revăzută și adăugită), Editura Univers Enciclopedic Gold 
  77. "Scara numerică" (in ro). dexonline.ro. 2016. http://dexonline.ro/articol/Scara_numeric%C4%83. 
  78. "Switzerland: Words and Phrases". TRAMsoft Gmbh. 29 August 2009. http://www.about.ch/culture/languages/words_n_phrases.html#numbers. 
  79. Canadian usage: Both scales are in use currently in Canada. English-speaking regions use the short scale exclusively, while French-speaking regions use the long scale, though the Canadian government standards website recommends that in French billion and trillion be avoided, recommending milliard for 109, and mille milliards (a thousand milliards) for 1012.[69]
  80. "billion". Granddictionnaire.com. 13 May 2013. http://www.granddictionnaire.com/ficheOqlf.aspx?Id_Fiche=8872290. 
  81. South African usage: South Africa uses both the long scale (in Afrikaans and sometimes English) and the short scale (in English). Unlike the 1974 UK switch, the switch from long scale to short scale took time. (As of 2011) most English language publications use the short scale. Some Afrikaans publications briefly attempted usage of the "American System" but that has led to comment in the papers[71] and has been disparaged by the "Taalkommissie" (The Afrikaans Language Commission of the South African Academy of Science and Art)[72] and has thus, to most appearances, been abandoned.
  82. Indian, Pakistani and Bangladeshi usage: Outside of financial media, the use of billion by Bangladeshi, Indian and Pakistani English speakers highly depends on their educational background. Some may continue to use the traditional British long scale. In everyday life, Bangladeshis, Indians and Pakistanis largely use their own common number system, commonly referred to as the Indian numbering system – for instance, Bangladeshi, Pakistani, and Indian English commonly use the words lakh to denote 100 thousand, crore to denote ten million (i.e. 100 lakhs) and arab to denote thousand million.[73]
  83. Foundalis, Harry. "Greek Numbers and Numerals (Ancient and Modern)". http://www.foundalis.com/lan/grknum.htm. 
  84. "billion" (in fr). billion (9th ed.). Académie française. 1992. http://atilf.atilf.fr/dendien/scripts/generic/cherche.exe?15;s=802200930;;. Retrieved 17 January 2016. "BILLION (les deux l se prononcent sans mouillure) n. m. XVe siècle, byllion, « un million de millions »; XVIe siècle, « mille millions ». Altération arbitraire de l'initiale de million, d'après la particule latine bi-, « deux fois ». Rare. Mille millions. Syn. vieilli de Milliard. Selon un décret de 1961, le mot Billion a reçu une nouvelle valeur, à savoir un million de millions (1012), qui n'est pas entrée dans l'usage.". 
  85. "Diccionario de la lengua española" (in es). Real Academia Española. http://dle.rae.es/?id=5WQzD1r. 
  86. "Canadian government standards website". Canadian Government. 2010. http://btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=&index=frt&__index=frt&srchtxt=billion&comencsrch.x=12&comencsrch.y=10. 
  87. "Taalkommissie se reaksie op biljoen, triljoen" (in af). Naspers: Media24. http://152.111.1.88/argief/berigte/beeld/2008/02/20/B1/14/01milbiltril.html. 
  88. "'Groen boek': mooiste, beste, gebruikersvriendelikste" (in af). Naspers:Media24. http://152.111.1.87/argief/berigte/dieburger/2009/07/13/SK/9/BBfpistorAWS.html. 
  89. Gupta, S.V. (2010). Units of measurement: past, present and future: international system of units. Springer. pp. 12 (Section 1.2.8 Numeration). ISBN 978-3642007385. https://books.google.com/books?id=pHiKycrLmEQC&q=crore%20lakh%20arab&pg=PA12. Retrieved 22 August 2011. 
  90. "BBC: GCSE Bitesize – The origins of the universe". BBC. http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/space/theoriginsoftheuniverserev1.shtml. 
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