Learning numbers in Italian is the fastest shortcut to sounding functional in the language. Before you can order two coffees in Trieste, catch a train at 14:35, or understand a price at the market in Bologna, you need i numeri italiani. The good news: Italian counting is remarkably regular. Master the first twenty, learn four small spelling rules, and you can build every number up to a million without memorising another list.

This guide walks you through Italian numbers from zero to 1,000,000, plus pronunciation, ordinal numbers, dates, prices and the mistakes English speakers make most often. Everything below comes from what our tutors at The Cognitio actually correct in beginner lessons every week.

Italian Numbers 0 to 20: The Only Part You Must Memorise

Italian numbers 0–20 are irregular, so this is your one true memorisation task. Everything after this is assembled from these building blocks.

Notice the hinge at 16/17. From 11 to 16, Italian puts the unit first and the ten second: undici is literally “one-ten”. From 17 to 19 it flips: diciassette is “ten-seven”. English does something similar (thirteen vs. seventeen), so the logic will feel familiar once you spot it.

Pronunciation traps in the first twenty

• c before i or e is “ch” — dieci is “DYEH-chee”, never “dee-EK-ee”.
• ch is a hard “k” — this is why cinque (“CHEEN-kweh”) and chi (“kee”) differ.
• Double consonants are held longer — sette and otto need a real pause on the tt. Italians hear the difference clearly.
• Every vowel is pronounced — due is two syllables, “DOO-eh”, not “doo”.

Counting to 100: The Two Rules That Do All the Work

From 20 onwards, Italian numbers become a construction kit. Take the ten, attach the unit, done: ventidue (22), trentaquattro (34), cinquantasei (56). They are written as one word, with no hyphen and no space.

Two rules cover the exceptions:

1. Drop the final vowel before uno and otto. Venti + uno = ventuno, not “ventiuno”. Trenta + otto = trentotto. This applies to every ten: quarantuno, cinquantotto, novantuno.
2. Tre takes an accent at the end of a compound. Standalone it is tre, but 23 is ventitré, 43 is quarantatré, 93 is novantatré — always with the acute accent on the final e.

One practical tip our tutors use: learn the tens as a chant — venti, trenta, quaranta, cinquanta, sessanta, settanta, ottanta, novanta. The rhythm sticks, and once it does you have access to eighty numbers instantly.

Hundreds, Thousands and Millions

Cento (100) is invariable. It never becomes “centi” — 200 is simply duecento, 700 is settecento. You will see this on Italian street signs and in art history: the Quattrocento is the 1400s, the Novecento the 1900s.

Thousands behave differently. Mille (1,000) becomes mila in the plural: 2,000 is duemila, 30,000 is trentamila. This is the single most common written error among learners.

Milione and miliardo are nouns, not adjectives, so they take an article and connect with di: un milione di euro, due milioni di persone. Compare with mille euro — no di needed there.

Also note the punctuation flip: Italian uses a comma as the decimal separator and a period for thousands. €1.500,50 means one thousand five hundred euros and fifty cents. Confusing this at a market stall is a genuinely expensive mistake.

Ordinal Numbers in Italian

Ordinals (first, second, third) work differently from cardinals. The first ten are irregular; from eleven on, you drop the final vowel of the cardinal and add -esimo.

• 1st — primo
• 2nd — secondo
• 3rd — terzo
• 4th — quarto
• 5th — quinto
• 6th — sesto
• 7th — settimo
• 8th — ottavo
• 9th — nono
• 10th — decimo
• 11th — undicesimo (undici → undic + esimo)
• 20th — ventesimo
• 100th — centesimo

Ordinals are adjectives, so they agree in gender and number: il primo piano (the first floor), la terza volta (the third time), i primi giorni (the first days). You will meet them constantly in addresses, floors of buildings, and the names of popes and kings — Papa Giovanni Paolo Secondo, Vittorio Emanuele Terzo.

Using Italian Numbers in Real Life

Dates

Italian uses cardinal numbers for dates, with one exception: the first of the month takes the ordinal. So it is il primo maggio (1 May) but il due maggio, il quindici agosto. Years are read as full numbers: 2026 is duemilaventisei.

Telling the time

Italy uses the 24-hour clock for schedules and timetables. Sono le quattordici e trentacinque — it’s 14:35. In conversation, people shorten it: sono le due e mezza (half past two). Note è l’una for one o’clock — singular, because it’s one hour.

Prices and phone numbers

Prices are read straightforwardly: €3,50 is tre euro e cinquanta. Phone numbers, unlike in English, are usually read in small groups rather than digit by digit — 06 4567 8901 might come out as zero sei, quarantacinque, sessantasette… Ask your interlocutor to slow down with Può ripetere più lentamente, per favore?

Quantities and shopping

Italian markets run on the metric system, and produce is priced by the etto (100 grams) as often as by the kilo. Due etti di prosciutto is 200 grams. For official measurement standards, the International Bureau of Weights and Measures maintains the SI definitions Italy follows, and the Italian National Institute of Statistics (Istat) publishes the population and price data you’ll see quoted in Italian news — excellent authentic reading practice with real numbers.

The Four Mistakes English Speakers Make Most

1. Writing compound numbers as separate words. It is ventisette, not “venti sette”. Italian numbers under a million are written solid.
2. Forgetting the accent on -tré. Without it, ventitre is simply wrong in writing.
3. Saying “mille” for 2,000. The plural mila is compulsory: duemila, tremila.
4. Swapping the decimal comma and thousands period. Reading €2.000 as “two euros” is a classic — and costly — slip.

Our original tip, drawn from lessons: don’t practise numbers in order. Sequential drilling teaches you to recite, not to recognise. Instead, read aloud the prices on any Italian supermarket flyer or the departure times on a Trenitalia timetable. Random, real numbers in context build the recall speed you actually need in conversation. Ten minutes a day for two weeks does more than a month of counting from one to a hundred.

Frequently Asked Questions

How do you say numbers in Italian from 1 to 10?

Uno, due, tre, quattro, cinque, sei, sette, otto, nove, dieci. Pronounce every vowel, and remember that dieci ends in a soft “chee” sound because c before i is pronounced like the English “ch”.

Are Italian numbers hard to learn?

They are among the easiest parts of Italian. After the irregular first twenty, the system is fully predictable: attach the unit to the ten, drop the final vowel before uno and otto, and add an accent to -tré. Most learners can count to 1,000 confidently within a week.

Why is 21 “ventuno” and not “ventiuno”?

Italian avoids the vowel clash between the ten and the unit. When a ten ending in a vowel meets uno or otto, the ten drops its final vowel — giving ventuno, ventotto, trentuno and trentotto.

How do you write large numbers in Italian?

Numbers below one million are written as a single word: centoventitremilaquattrocentocinquanta (123,450). From a million up, milione and miliardo stand apart as nouns and take di before a noun: due milioni di abitanti.

Start Counting with Confidence

Numbers in Italian reward a small, focused effort with an outsized payoff. Twenty words memorised, four rules understood, and you can handle prices, dates, times, addresses and quantities across the whole country. The rest is repetition in real contexts until the recall becomes automatic.

Want feedback on your pronunciation of ventitré, diciassette and those tricky double consonants? Book a lesson with a native Italian tutor at The Cognitio and put your numbers to work in conversation from day one.