Counting in Latin
Enter a number and get it written in full in Latin.
Latin (lingua Latina, sermo Latinus) is an Italic language originally spoken in Latium and Ancient Rome, from II BC to II AD, then through the Middle Ages. Extinct language to the extend it has no native speaker, Latin is still one of Vatican City co-official languages (alongside with French, German and Italian).
Due to lack of data, this program can only count accurately up to 9,999 in Latin. Please contact me if you can help me counting up from that limit.
The Roman numeration
The Roman numbers are formed from seven letters or symbols: Ⅰ (1), Ⅴ (5), Ⅹ (10), Ⅼ (50), Ⅽ (100), Ⅾ (500), and Ⅿ (1,000). Used in ancient Rome and during the Middle Ages, they allow to count up to 4,999 through a both additive and subtractive system. To form a number, we add the symbols from left to right until we get three identical symbols (this is the additive part: Ⅰ, ⅠⅠ, ⅠⅠⅠ, ⅩⅩⅠⅠ), then we place on the left side of the bigger symbol the number to subtract (this is the subtractive part: ⅠⅤ, ⅠⅩ, ⅩⅭ). The same symbol cannot be used more than three times in a row, except for Ⅿ (ⅯⅯⅯⅯ is 4,000). Unlike the decimal system, it is an additive system where each symbol has its own value, independent of where it is placed.
Latin numbering rules
- Numbers from zero to ten are specific words, namely nulla , unus/una/unum (m/f/n) , duo/duae/duo (m/f/n) , tres/tres/tria (m/f/n) , quattuor , quinque , sex , septem , octo , novem , and decem .
- From eleven to seventeen, numbers are formed from the root of the digit followed by ten: undecim , duodecim , tredecim , quattuordecim , quindecim , sedecim , and septendecim . Eighteen and nineteen are formed on a subtracting manner: duodeviginti  (literally two from twenty), and undeviginti  (one from twenty).
- The tens have specific names based on the matching digit root except for ten and twenty: decem , viginti , trentrigintata , quadraginta , quinquaginta , sexaginta , septuaginta , octoginta , and nonaginta .
- Compound numbers are formed by setting the ten, then the unit, separated with a space when the unit digit goes from one to seven, following the additive structure (e.g.: viginti unus , triginta duo ). When a compound number ends with eight or nine, the additive structure (ten plus unit) is replaced by the subtracting structure (next ten minus unit), with no space (e.g.: duodequinquaginta  (literally two from fifty), undesexaginta  (one from sixty), nonaginta octo  (which is an exception to the rule), undecentum  (one from one hundred)).
- The hundreds are formed by prefixing the word hundred by the multiplier digit root, except for one hundred: centum , ducenti , trecenti , quadringenti , quingenti , sescenti , septingenti , octingenti , and nongenti .
- Thousands are formed by prefixing the word thousand by the multiplier digit, except for one thousand: mille [1,000] (plural milia), duo milia [2,000], tria milia [3,000] (using the neuter from of three), quattuor milia [4,000], quinque milia [5,000]… In singular, the word mille is an indeclinable adjective, but in plural, this is a noun following the third declension neuter i-stem.
A Latin Grammar
by James Morwood, editors Oxford University Press (2000)
by G.D.A. Sharpley, editors Routledge (1999)
[ , ]
editors Editorial Porrua (2008)
Gramatica de la lengua latina
by Gregorio Mayans Y. Siscar, editors Nabu Press (2010)
Grammaire latine complète
by Lucien Sausy, editors Eyrolles (2010)
by H. Petitmangin, editors Nathan (1991)
Gramática de Latim
by Leon Stock , editors Presença (2000)
- 1 – unus
- 2 – duo
- 3 – tres
- 4 – quattuor
- 5 – quinque
- 6 – sex
- 7 – septem
- 8 – octo
- 9 – novem
- 10 – decem
- 11 – undecim
- 12 – duodecim
- 13 – tredecim
- 14 – quattuordecim
- 15 – quindecim
- 16 – sedecim
- 17 – septendecim
- 18 – duodeviginti
- 19 – undeviginti
- 20 – viginti
- 30 – triginta
- 40 – quadraginta
- 50 – quinquaginta
- 60 – sexaginta
- 70 – septuaginta
- 80 – octoginta
- 90 – nonaginta
- 100 – centum
- 1,000 – mille
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