What are the Spanish numbers 1 through 100?

The numbers start with uno, dos, tres, cuatro, cinco and continue through unique forms up to quince (15). From 16 to 29, they become fused single words (dieciséis, veintiuno). From 30 onward, they follow the pattern tens + y + unit (treinta y uno, cuarenta y dos), all the way to noventa y nueve (99) and cien (100). The full list is in the table above.

When do you use cien vs. ciento?

Use cien when saying 100 by itself or before mil and millón (cien, cien mil, cien millones). Use ciento for any number from 101 to 199 (ciento uno, ciento treinta y cinco). The [RAE's Diccionario panhispánico de dudas](https://www.rae.es/dpd/ciento) confirms this rule.

Why does 21 change to veintiún or veintiuna?

The number uno shortens before nouns: un before masculine nouns and una before feminine nouns. This extends to all compounds ending in -uno. So "twenty-one books" is veintiún libros and "twenty-one chairs" is veintiuna sillas. However, in percentages you always keep the full form: veintiuno por ciento.

Which Spanish numbers have accent marks?

Only four numbers between 1 and 100 carry written accents: dieciséis (16), veintidós (22), veintitrés (23), and veintiséis (26). They are stressed on the last syllable and end in -s, which requires a tilde under standard Spanish accent rules.

How do you write decimals and thousands in Spanish?

For decimals, both comma and period are accepted depending on the region (3,14 or 3.14). For thousands, the [RAE recommends a thin space](https://www.rae.es/ortograf%C3%ADa/los-n%C3%BAmeros-enteros-y-el-separador-de-millares) (30 000) to avoid confusion, though legacy formats with periods or commas persist in everyday media.

Is it un mil or mil for 1,000?

Just mil. The RAE [discourages un mil](https://www.rae.es/dpd/mil). Say mil doscientos for 1,200, not un mil doscientos. The plural miles is used only to mean "thousands of" (miles de personas).

What's the difference between Spanish billón and English billion?

Spanish billón equals 10^12 (one trillion in English). English "billion" (10^9) translates to mil millones in Spanish. The [RAE defines billón](https://www.rae.es/dpd/bill%C3%B3n) using the long scale, which is standard across all Spanish-speaking countries.

What's the fastest way to memorize Spanish numbers 1 to 100?

Learn the 16 unique forms (0 to 15), then the tens words (20, 30, 40... 90), and finally practice combining them with the y pattern. That gives you the ability to build any number on the fly. Spaced repetition accelerates the process. You can practice these patterns for free in [Lingo Legend](https://www.lingolegend.com), which schedules optimal review intervals and uses varied question types to keep recall active. --- For more Spanish learning resources, visit the [Lingo Legend blog](https://www.lingolegend.com/blog). Want to request a printable numbers deck or share feedback? [Reach out here](https://www.lingolegend.com/feedback).

Spanish Numbers One Through 100 (2026): How to Count

LEARN A LANGUAGE WHILE GAMING

Widget Didn’t Load

Check your internet and refresh this page.

If that doesn’t work, contact us.

LEARN A LANGUAGE WHILE GAMING

Privacy Policy

Terms of Use