Of Languages and Numbers

How to count in Italian

Enter a number and get it written in full in Italian.

Language overview

Italian (italiano) is a romance language from the indo-european family. Official language in Italy, San Marino, and Vatican City, co-official in Switzerland (alongside with French, German and Romansh), it counts about 62 million speakers.

Italian numbering rules

• Numbers from zero to ten are specific words, namely zero [0], uno [1], due [2], tre [3], quattro [4], cinque [5], sei [6], sette [7], otto [8], nove [9], and dieci [10].
• From eleven to sixteen, numbers are formed from the root of the digit followed by ten: undici [11], dodici [12], tredici [13], quattordici [14], quindici [15], and sedici [16]. From seventeen to nineteen, the order is reversed, as the unit is put directly after the ten: diciassette [17], diciotto [18], and diciannove [19].
• The tens have specific names based on the matching digit root except for ten and twenty: dieci [10], venti [20], trenta [30], quaranta [40], cinquanta [50], sessanta [60], settanta [70], ottanta [80], and novanta [90].
• Compound numbers are formed by juxtaposing the ten and the unit, causing an apocope of the last vowel of the ten name before a digit starting with a vowel, i.e. one and eight (e.g.: ventuno [21], trentadue [32], quarantotto [48]). When a compound number ends with three, tre becomes tré and the stress is put on the last syllable (e.g.: cinquantatré [53]).
• The hundreds are formed by prefixing the word hundred by the multiplier digit, except for one hundred: cento [100], duecento [200], trecento [300], quattrocento [400]…
• Hundreds, tens and units are linked together with no space (e.g.: centonove [109], duecentotrenta [230], novecentonovantanove [999]).
• Thousands are formed by prefixing the word thousand by the multiplier digit, except for one thousand: mille [1,000] (plural mila), duemila [2,000], tremila [3,000], quattromila [4,000], cinquemila [5,000]…
• Numbers are grouped in words of three digits, with the specific rule that a space is added after the word for thousand if its multiplier is greater than one hundred and does not end with a double zero (e.g.: duemilatrecentoquarantacinque [2,345], seicentomiladue [600,002], settecentosessantacinquemila duecento [765,200]).
• Italian language uses the long scale for big numbers where every new word greater than a million is one million times bigger than the previous term. One million is un milione, un miliardo is 10⁹ (the US billion), and un bilione (10¹²) worths a thousand US billions, the next step, 10¹⁵, being un biliardo (one quadrillion).
• The digit one (uno) becomes un before a masculine noun, which is the case of all scale names. Besides, their plural construction is regular, the ending -e or -o becoming -i (e.g.: un milione [one million], due milioni [two million], un miliardo [one billion], due miliardi [two billion]).

Books

Numbers list

1 – uno 2 – due 3 – tre 4 – quattro 5 – cinque 6 – sei 7 – sette 8 – otto 9 – nove

10 – dieci 11 – undici 12 – dodici 13 – tredici 14 – quattordici 15 – quindici 16 – sedici 17 – diciassette 18 – diciotto

19 – diciannove 20 – venti 30 – trenta 40 – quaranta 50 – cinquanta 60 – sessanta 70 – settanta 80 – ottanta 90 – novanta

100 – cento 1,000 – mille one million – un milione one billion – un miliardo one trillion – un bilione

Romance languages

Asturian, Catalan, Corsican, Eonavian, French, French (Belgium), French (Switzerland), Friulian, Galician, Italian, Ladin, Latin, Lombard (Milanese), Portuguese (Brazil), Portuguese (Portugal), Romansh, Sardinian, Spanish, Spanish (Puerto Rico), and Venetian.

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