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Numbers in Spanish: from 0 to a million

How Spaniards say 16 and 21, when 100 is cien and when ciento, and why 500 is quinientos. Tables with audio, an “any number in words” converter and exercises to understand numbers by ear.

  • Any number in words
  • Audio
  • 1–100 and beyond
  • 3 exercises
  • No sign-up
See the tablesPractice

Any number in words

Type a number in digits to see how it’s written and hear how it sounds. Up to 999,999,999.

Type a number and its spelling will appear here.

Numbers 0 to 20

Up to 15 each number is its own word; from 16 they merge: dieciséis = diez y seis.

Speed

Tens

Veinte, treinta, cuarenta… — from 30 the tens end in -nta.

How numbers are built

The numbers people get wrong most often. Tap to listen.

Hundreds, thousands, millions

Cien and ciento, mil, millón — and when uno becomes un.

Rules worth knowing

Spanish numbers are simple: you just need a handful of special words.

  • 16 = dieciséis

    From 16 to 29 the number is one word: dieciséis, diecisiete, veintiuno, veintidós. Note the accents: dieciséis, veintidós, veintitrés, veintiséis.

  • 31 = treinta y uno

    From 31 the ten and the unit are separate words joined by y: treinta y uno, cuarenta y cinco, noventa y nueve.

  • 100 = cien

    Exactly 100 is cien (also cien mil, cien millones). Followed by another number it’s ciento: ciento uno, ciento cincuenta.

  • 500 = quinientos

    Hundreds are one word, and three are irregular: quinientos (500), setecientos (700), novecientos (900). Before feminine nouns: doscientas personas.

  • 21,000 = veintiún mil

    Before mil, millón and masculine nouns, uno shortens to un: veintiún mil, un millón, un libro. Feminine: veintiuna casas.

  • 2,000,000 = dos millones

    Mil never changes: dos mil, diez mil. Millón is a noun: un millón, dos millones, and takes de before a noun: un millón de euros.

  • 1,5 = uno coma cinco

    Spain uses a decimal comma (1,5 — uno coma cinco) and a point or space for thousands: 10.000. Mexico does it the English way.

Practice: test yourself

10 numbers per round. Start with 0–20, then move to bigger ones — numbers are hardest to catch by ear.

Choose an exercise

How to understand numbers by ear

  • Learn 0–29 and the tens by heart — everything else is built from them.
  • Don’t mix up seis (6) and siete (7), sesenta (60) and setenta (70): listen for the t in seven.
  • Say prices aloud: “Son veintitrés euros con cincuenta” — numbers become second nature.
  • Do a few rounds of “Hear the number” every day: ears are slower than eyes.

FAQ

Didn’t find your answer? Send us a request — we’ll tell you everything.

How do you count from 1 to 10 in Spanish?

Uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve, diez. Zero is cero.

How are 11 to 20 written in Spanish?

Once (11), doce (12), trece (13), catorce (14), quince (15), dieciséis (16), diecisiete (17), dieciocho (18), diecinueve (19), veinte (20). Up to 15 they’re separate words; from 16 it’s “ten and…” in one word.

When do you say cien and when ciento?

Cien is exactly 100, and before mil and millones: cien euros, cien mil. Ciento is used when another number follows: ciento uno (101), ciento noventa (190). “A hundred per cent” is cien por cien or cien por ciento.

How do you say a year in Spanish?

As a normal number, not in pairs: 1991 is mil novecientos noventa y uno, 2026 is dos mil veintiséis.

What’s next

Next step

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