Would you like to learn how to read and say Latin numbers more naturally? This page is an excellent place to begin. Latin numbers appear in classical texts, inscriptions, dates, outlines, mottos, and many modern academic contexts where Latin still survives.

This guide walks you through Latin numbers step by step. You will begin with the most important numerals to memorize, then learn the basic rules from 1 to 1000, and finally see how larger numbers are formed and used in real-life reading contexts.

Before you begin, it helps to know how this page labels Latin number forms. You will see the number written in Latin throughout the charts and examples so you can connect spelling, meaning, and common usage at the same time.

• Latin shows the standard cardinal form of the number in Latin.
• Latin number words are not the same thing as Roman numerals. A text might write XXI, but the spoken or fully written form is viginti unus.
• A few numerals, especially one, two, three, and the hundreds, connect with Latin gender and agreement in ways that are worth noticing early.
• Classical Latin did not have a strong native everyday word for zero, so forms like nulla or nullum are later or school-Latin conventions.

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Every Latin Numeral You Need First

First, take a bird’s-eye view. These are the key numerals you should know by heart. Most other Latin numbers are built from these core forms, although the teens and some larger forms are worth learning directly.

Number	Latin	Number	Latin
0	nulla / nullum	21	viginti unus
1	unus	30	triginta
2	duo	40	quadraginta
3	tres	50	quinquaginta
4	quattuor	60	sexaginta
5	quinque	70	septuaginta
6	sex	80	octoginta
7	septem	90	nonaginta
8	octo	100	centum
9	novem	101	centum unus
10	decem	200	ducenti
11	undecim	300	trecenti
12	duodecim	400	quadringenti
13	tredecim	500	quingenti
14	quattuordecim	600	sescenti
15	quindecim	700	septingenti
16	sedecim	800	octingenti
17	septendecim	900	nongenti
18	duodeviginti	1000	mille
19	undeviginti	10,000	decem milia
20	viginti	100,000	centum milia

Once these forms become familiar, the rest of the Latin number system becomes much easier to understand.

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The Rules: Latin Numbers 1–1000

Main Numbers in Latin: Units and Tens

Start by learning the units from 1 to 9 and the main tens. These are the foundation of nearly everything else in Latin numbers. The word decem for ten and the series from viginti through nonaginta are especially important.

Units	Latin	Tens	Latin
1	unus	10	decem
2	duo	20	viginti
3	tres	30	triginta
4	quattuor	40	quadraginta
5	quinque	50	quinquaginta
6	sex	60	sexaginta
7	septem	70	septuaginta
8	octo	80	octoginta
9	novem	90	nonaginta

Once you know these, you can already form many more numbers. Latin builds larger numbers in a fairly regular pattern, though a few older forms and agreement patterns are worth learning early.

Examples in Use

• Octo libri in mensā sunt. — There are eight books on the table.
• Pretium est quadraginta nummi. — The price is forty coins.
• In commentariō sunt nonaginta paginae. — There are ninety pages in the report.

How Latin Builds 11–99

Latin numbers from 11 to 17 are usually learned as individual forms, such as undecim, duodecim, and septendecim. The numbers 18 and 19 are especially worth noticing, because classical Latin often expresses them as duodeviginti (“two from twenty”) and undeviginti (“one from twenty”). After that, the tens become more regular: you combine the tens word with the unit, as in viginti unus or sexaginta septem.

Number	Latin
11	undecim
12	duodecim
14	quattuordecim
16	sedecim
20	viginti
21	viginti unus
35	triginta quinque
48	quadraginta octo
67	sexaginta septem
99	nonaginta novem

This is one reason Latin numbers begin to feel manageable after the early teens: once you recognize the main tens, most compound numbers become easy to read and build.

Quick pattern: [tens] + [unit]

Examples in Use

• Expecto carrum numerī viginti unus. — I am waiting for bus number 21.
• In aedificiō sunt triginta quinque tabulāta. — The building has 35 floors.
• Nostra schola in camerā sexaginta septem est. — Our classroom is room 67.

Counting 100 to 1000

Once you can count from 1 to 99, moving into the hundreds is much more manageable. Latin forms the hundreds with a set of core words such as ducenti, trecenti, and quadringenti, and the thousands begin with mille.

Number	Latin
100	centum
200	ducenti
300	trecenti
400	quadringenti
500	quingenti
600	sescenti
700	septingenti
800	octingenti
900	nongenti
1000	mille

Some hundred forms are not transparent if you try to build them letter by letter, so it is worth memorizing them directly. The hundreds also behave like adjectives in many contexts and can change form to agree with the noun they describe.

Number	Latin
101	centum unus
125	centum viginti quinque
242	ducenti quadraginta duo
518	quingenti duodeviginti
999	nongenti nonaginta novem

Examples in Use

• Schola centum unum annum habet. — The school is 101 years old.
• Lego paginam centum viginti quīnque. — I am reading page 125.
• Ad convīvium venerunt quingenti duodeviginti hominēs. — 518 people attended the event.

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Large Numbers in Latin

Latin can express large numbers clearly, but the system feels a little different from modern everyday languages because many classical texts preferred either Roman numerals in writing or descriptive number phrases in prose. Learners usually become much more comfortable once they can recognize mille and milia quickly.

Number	Latin
1,000	mille
10,000	decem milia
100,000	centum milia
1,000,000	decies centena milia
2,000	duo milia
1,000,000,000	mille miliones (modern Latin)

This system matters because classical Latin often handled very large totals descriptively, especially beyond the thousands. In modern educational Latin, you may also see more direct large-number expressions that feel closer to modern European usage.

Number	Latin
1,225	mille ducenti viginti quinque
22,000	viginti duo milia
305,400	trecenta quinque milia quadringenti
2,300,000	viginti tria centena milia

Examples in Use

• In oppidō sunt circiter duo milia quingenti incolae. — The town has about 2,500 residents.
• Summa est trecenta quinque milia quadringenti nummi. — The total is 305,400 coins.
• Cōnsilium viginti tria centena milia nummōrum postulat. — The project requires 2,300,000 coins.

Roman Numerals and Word Forms Both Matter

In Latin, large numbers are easier to understand once you notice the difference between written numeral symbols and written-out number words. A Roman inscription may show XXII, C, or M, while a grammar lesson may write the same ideas as viginti duo, centum, or mille. Reading both systems is useful, but this page focuses on the spelled-out words.

Useful Notes About Latin Numbers

• Agreement matters: the basic forms for 1, 2, and 3, and many hundreds, can change for gender and case depending on the noun.
• The 11–19 range is important: these forms are best memorized early, especially duodeviginti and undeviginti for 18 and 19 in classical usage.
• Roman numerals are separate: Latin number words are not the same as numeral symbols such as I, V, X, L, C, D, and M.
• Zero is not purely classical: forms like nulla or nullum are helpful for learners, but they reflect later or pedagogical Latin more than everyday classical counting.

Real-Life Latin Number Examples

• Hoc pretium est undeviginti nummi. — This costs 19 coins.
• Viginti quinque annos natus sum. — I am twenty-five years old.
• Inscriptio est numerus quadraginta octo. — The address is number 48.
• Hodie est duodecimus dies Martii. — Today is March 12.
• Nunc hora est septima et dimidia. — It is 7:30.

Continue Learning Latin Numbers

Once you understand the main patterns, it becomes much easier to read, write, and recognize Latin numbers in context. Use the chart pages, date lessons, time lessons, and quiz pages to keep strengthening your understanding.