French Numbers 1 to 100: The Full List and the Logic Behind Them

French numbers 1–10 are un, deux, trois, quatre, cinq, six, sept, huit, neuf, dix. From 20 to 69 French counts in regular tens - vingt-trois is simply “twenty-three.” Then at 70, French switches into a different logic entirely: soixante-dix (60+10), quatre-vingts (4×20), quatre-vingt-dix (4×20+10).

This guide gives you the full 1–100 system: the 20 words you must memorize, the easy assembly zone from 20–69, the famous 70/80/90 math explained properly, pronunciation traps with liaison, and how numbers actually get used - prices, phone numbers, years.

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French numbers 1 to 20 (memorize these)

• Six and dix change sound in context - more on this in the pronunciation section below.
• Un/une agrees with gender: un livre (a book) but une pomme (an apple).
• 11–16 are single words; 17–19 are visibly compounds (dix-sept = 10+7).

For the sounds behind these numbers, see our French pronunciation guide.

The tens: 20 to 69 (the easy zone)

From 20 onward, French assembles numbers the way you’d expect: ten + unit.

Building numbers within a ten is just ten-word + unit-word, hyphenated: vingt-trois /vehnt-TRWAH/ (23), cinquante-huit /sehn-kahnt-WEET/ (58). One special rule: for numbers ending in 1 - 21, 31, 41, 51, 61 - French inserts et (and) instead of a hyphen: vingt et un (21), trente et un (31). This “et un” pattern stops at 61; 71 does something slightly different, and 81/91 don’t use it at all - see below.

70, 80, 90: the famous French math

This is where French breaks from the pattern - and where most learners get stuck. Here’s the logic, spelled out:

• 70 = soixante-dix /swah-sahnt-DEES/ - literally “sixty-ten” (60+10). 71 = soixante et onze (60+11, keeping the “et” pattern with onze instead of un). 72–79 continue as soixante-douze, soixante-treize, and so on up through soixante-dix-neuf (79).
• 80 = quatre-vingts /kah-truh-VEHN/ - literally “four twenties” (4×20), a genuine vestige of an older base-20 counting system. Note the s on vingts here. 81 = quatre-vingt-un - and the S drops the moment another number follows, with no “et”: quatre-vingt-un, quatre-vingt-deux, etc.
• 90 = quatre-vingt-dix /kah-truh-vehn-DEES/ - “four-twenty-ten” (4×20+10). 91–99 continue the same way: quatre-vingt-onze (91), quatre-vingt-douze (92), up to quatre-vingt-dix-neuf (99).

Why does this exist? It’s a remnant of a vigesimal (base-20) counting system that was once more widespread across French-speaking Europe. Belgium and Switzerland dropped it for the higher decades: they say septante (70) and nonante (90) instead, and Switzerland often uses huitante (80) as well. If you ever hear these, you’re listening to Belgian or Swiss French - both are perfectly correct, just regionally different from France’s system.

100 and beyond (bonus)

Cent is 100, with no article (cent euros, not “un cent euros”). It takes an S when multiplied - deux cents (200) - but the S drops the moment another number follows: deux cent un (201), deux cent cinquante (250). Mille (1,000) never takes an S at all: deux mille, trois mille. For the full three-digit-and-beyond system, see our dedicated guide to French numbers 100 to 1000 and beyond.

Pronunciation traps with numbers

A handful of numbers change their sound depending on what follows them - this trips up learners more than the 70/80/90 math does.

You don’t need to memorize this table before speaking - native audio will train your ear to it naturally. It just explains why six ans and six livres don’t quite sound the same.

Using numbers in real life

Prices are read as a straight number plus the currency: dix euros cinquante (€10.50). Phone numbers are read in pairs of two digits, not one by one: 06 12 34 56 78 becomes zéro six, douze, trente-quatre, cinquante-six, soixante-dix-huit. Years are read as full numbers rather than split into pairs the way English sometimes does: 2026 is deux mille vingt-six, not “twenty twenty-six.” For a deep dive into greeting phrases that often pair with numbers in daily small talk, see everyday French greetings.

A simple practice habit: read prices aloud every time you shop online in French, or say your own phone number in French pairs until it’s automatic. Numbers are one of the highest-frequency word categories in any language - the payoff for mastering them is immediate and constant.