French Numbers 1-100: The Complete Guide to Counting in French

French numbers are mostly logical and predictable, until you reach 70. That is where one of the most fascinating quirks in any European language kicks in, and where many learners stumble.

French is spoken by approximately 321 million people across 29 countries, according to the Organisation internationale de la Francophonie's 2022 report. From ordering a croissant in Paris to bargaining at a market in Dakar, numbers are woven into every interaction.

"The French vigesimal system for numbers 70 through 99 is a living relic of pre-Roman Gaul. It is perhaps the most striking archaism in everyday modern French."

(Maurice Grevisse, Le Bon Usage, 16th edition, 2016)

This guide walks you through every number from 1 to 100, explains the infamous 70-99 system, covers ordinals, and reveals the Belgian and Swiss alternatives that many learners wish they had learned first.

Numbers 1-10: The Building Blocks

Every French number ultimately traces back to these ten fundamental forms. Pay special attention to the silent final consonants, a hallmark of French pronunciation.

Numbers 11-20: Unique Forms

Like most European languages, French has unique names for 11-16. Starting at 17, the pattern shifts to a compound form: dix-sept (ten-seven), dix-huit (ten-eight), dix-neuf (ten-nine).

Note that vingt (20) has a silent final -gt when standalone. However, in vingt et un (21), the t links to the following vowel through liaison: "van-tay-UHN."

Numbers 21-29: The Vingt- Series

The twenties introduce the conjunction et (and) for 21, but use hyphens for 22-29. This et pattern repeats at 31, 41, 51, and 61.

The Tens: 30 to 69 (The Easy Part)

From 30 to 69, French numbers are entirely decimal and predictable. Each multiple of ten has a unique name, and compound numbers follow the pattern tens + unit (with et un for numbers ending in 1).

Compound formation is simple: trente et un (31), trente-deux (32), quarante-cinq (45), cinquante-huit (58). Remember, et only appears with 1 (trente et un, quarante et un, cinquante et un, soixante et un), never with other digits.

70-99: The Vigesimal System

Here is where French becomes famously complex. Standard French (as spoken in France) uses a base-20 system for these numbers, a relic of the Celtic Gaulish language that predated Latin in Gaul.

The logic, once you grasp it, is consistent:

• 70-79: 60 + (10-19). So 73 is soixante-treize (60 + 13).
• 80-89: 4 x 20 + (0-9). So 85 is quatre-vingt-cinq (4x20 + 5).
• 90-99: 4 x 20 + (10-19). So 97 is quatre-vingt-dix-sept (4x20 + 17).

Belgian and Swiss Alternatives

If the 70-99 system seems unnecessarily complicated, you are not alone. French speakers in Belgium, Switzerland, and parts of Africa use simpler decimal forms.

These forms are perfectly standard in their regions. In Belgium, septante and nonante are universal, though 80 remains quatre-vingts. In Switzerland, all three decimal forms are used, with huitante predominant in the Vaud canton and octante appearing in some other areas.

Beyond 100: Hundreds and Thousands

The pattern for larger numbers is more straightforward than the 70-99 complications might suggest.

Like quatre-vingts, cents takes an -s only when it ends the number: deux cents (200) but deux cent un (201). Mille (1,000) is invariable and never takes an -s.

Ordinal Numbers in French

French ordinals are formed by adding -ième to the cardinal number. The major exception is "first," which has its own unique form.

Two spelling notes: cinq adds a -u- before -ième (cinquième), and neuf changes its final -f to -v- (neuvième). Unlike Spanish, French continues using ordinals comfortably beyond 10th: le vingtième siècle (the 20th century), le quinzième arrondissement (the 15th district).

Cultural Significance of Numbers in France

Numbers carry symbolic weight in French culture that goes well beyond mathematics.

Lucky 7: As in much of Western culture, seven is considered fortunate. The expression être au septième ciel (to be in seventh heaven) is commonly used.

Unlucky 13: Friday the 13th (vendredi treize) is considered unlucky, but with an interesting twist: many French people also see it as a lucky day for the lottery. The national lottery Française des Jeux reports much higher ticket sales on every Friday the 13th.

The number 13 at dinner: A particularly strong French superstition holds that seating 13 people at a dinner table brings bad luck. This belief is strong enough that some hosts will add a 14th place setting with a stuffed animal or doll to avoid it.

Number formatting: France uses periods or spaces where English uses commas, and commas where English uses decimal points. So 1,000.50 in English is written 1 000,50 or 1.000,50 in French. This frequently causes confusion for travelers and learners.

Practice with Real French Content

Numbers appear constantly in French daily life, from reading menus and prices to understanding train announcements and addresses. The vigesimal system for 70-99 becomes second nature with enough exposure, but it requires practice beyond textbook drills.

French films and TV shows are excellent for number exposure. Market scenes, restaurant orders, and news broadcasts are especially useful. Visit our guide to the best movies for learning French for top picks across different genres and difficulty levels.

Wordy helps you practice French numbers in authentic contexts with interactive subtitles on French movies and shows. When a number comes up in dialogue, tap it to see the written form and pronunciation breakdown. Check our blog for more French learning guides, or head to our French learning page to start practicing today.