Numbers are one of the first things you actually use in a new language. You need them to pay for coffee, catch a bus, share your phone number, and understand a price at the market. The good news is that Spanish numbers follow clear, repeating patterns, so once you learn the first twenty and a handful of rules, you can count all the way to a million and beyond. This guide walks you through every stage, with pronunciation, charts, and the little grammar quirks that trip up most beginners.
Why Spanish numbers are easier than they look
Spanish counting is refreshingly logical. There are only a few “building blocks” you truly need to memorize; everything else is assembled from them. Once you know uno through diez, the numbers from 30 upward are built by joining a “tens” word, the connector y (“and”), and a single digit. Spanish also pronounces every letter consistently, so a number you can read is a number you can say. Learn the patterns below and you will rarely have to memorize a number in isolation again.
Numbers 0 to 20
Start here. The numbers 0 to 15 are unique words you should memorize outright, while 16 to 19 are contractions of “ten and six,” “ten and seven,” and so on (dieciséis = diez y seis). Say them out loud several times; the rhythm helps them stick.
| Number | Spanish | Pronunciation |
|---|---|---|
| 0 | cero | SEH-roh |
| 1 | uno | OO-noh |
| 2 | dos | dohs |
| 3 | tres | trehs |
| 4 | cuatro | KWAH-troh |
| 5 | cinco | SEEN-koh |
| 6 | seis | says |
| 7 | siete | see-EH-teh |
| 8 | ocho | OH-choh |
| 9 | nueve | NWEH-beh |
| 10 | diez | dee-EHS |
| 11 | once | OHN-seh |
| 12 | doce | DOH-seh |
| 13 | trece | TREH-seh |
| 14 | catorce | kah-TOR-seh |
| 15 | quince | KEEN-seh |
| 16 | dieciséis | dee-eh-see-SAYS |
| 17 | diecisiete | dee-eh-see-see-EH-teh |
| 18 | dieciocho | dee-eh-see-OH-choh |
| 19 | diecinueve | dee-eh-see-NWEH-beh |
| 20 | veinte | BAYN-teh |
If you are just getting started, it helps to pair numbers with other everyday vocabulary. Our guide to basic Spanish words and phrases gives you sentences where these numbers come alive.
Numbers 21 to 29: one word, please
Here is the first rule that surprises learners: the numbers from 21 to 29 are written as a single word, not three. So instead of veinte y uno, you write veintiuno. The old y gets swallowed into the word and becomes an i.
- 21 — veintiuno (bayn-tee-OO-noh)
- 22 — veintidós (bayn-tee-DOHS)
- 23 — veintitrés (bayn-tee-TREHS)
- 24 — veinticuatro
- 25 — veinticinco
- 26 — veintiséis
- 27 — veintisiete
- 28 — veintiocho
- 29 — veintinueve
Notice the accent marks on veintidós, veintitrés, and veintiséis. They tell you to stress that final syllable. This “one word” habit only applies to the twenties, which is exactly why so many learners slip up when they reach the next batch.
Numbers 30 to 99: bring back the “y”
From 31 onward, the connector y (“and”) comes back and stays as three separate words. The formula could not be simpler:
tens word + y + single digit → treinta y uno (31), cuarenta y dos (42), noventa y nueve (99).
Memorize the tens words below and you can produce any number from 30 to 99 instantly.
| Number | Spanish | Pronunciation |
|---|---|---|
| 30 | treinta | TRAYN-tah |
| 40 | cuarenta | kwah-REHN-tah |
| 50 | cincuenta | seen-KWEHN-tah |
| 60 | sesenta | seh-SEHN-tah |
| 70 | setenta | seh-TEHN-tah |
| 80 | ochenta | oh-CHEHN-tah |
| 90 | noventa | noh-BEHN-tah |
| 100 | cien / ciento | see-EHN / see-EHN-toh |
| 200 | doscientos | dohs-see-EHN-tohs |
| 500 | quinientos | kee-nee-EHN-tohs |
| 1,000 | mil | meel |
A quick warning about 70: it is setenta, not “setventa.” And 90 is noventa, easy to confuse with nueve. Say them slowly until they feel natural.
Hundreds: cien vs. ciento (and a gender surprise)
One hundred has two forms, and choosing between them is one of the most common questions learners ask. Use cien for exactly 100 or when it comes right before a noun: cien euros, cien personas. Use ciento when another number follows to make 101–199: ciento uno (101), ciento cincuenta (150). Note there is no y right after ciento — it is ciento uno, never “ciento y uno.”
From 200 to 900, the hundreds have their own words, and here comes the surprise: they agree in gender with the noun they describe. The -cientos ending changes to -cientas before feminine nouns.
- doscientos libros (200 books, masculine) → doscientos
- doscientas casas (200 houses, feminine) → doscientas
- Watch the irregular ones: 500 = quinientos, 700 = setecientos, 900 = novecientos (not “cincocientos” or “nuevecientos”).
This gender agreement is the same principle you meet when learning colors in Spanish, so if you have practiced adjective endings already, this will feel familiar.
Thousands and millions
The word for one thousand is mil, and it is beautifully low-maintenance: it does not change to a plural when counting thousands. You say dos mil (2,000), cinco mil (5,000), and cincuenta mil (50,000) — never “dos miles.” You also do not add un before mil: 1,000 is simply mil, not “un mil.”
Millions behave differently. Here you do use un and you do pluralize: un millón (1,000,000), dos millones (2,000,000). When a million is followed directly by a noun, add de: un millón de dólares (a million dollars). One more thing to remember: many Spanish-speaking countries use a period for thousands and a comma for decimals, the reverse of English — so 1.000,50 means “one thousand and fifty cents.”
The uno → un rule (apocope)
When uno sits directly in front of a masculine noun, it drops its final -o and becomes un. This shortening is called apocope.
- un libro — one book (not “uno libro”)
- veintiún años — twenty-one years (note the accent when un stands at the end of a compound)
- Before a feminine noun it becomes una: una casa, veintiuna casas
- When you count in the abstract (“one, two, three…”) or answer “how many?”, you keep the full form: uno.
Ordinal numbers (first, second, third)
Ordinals tell you position in a sequence. In everyday speech Spanish speakers usually only use ordinals up to about tenth; beyond that they simply switch to regular (cardinal) numbers. Ordinals agree in gender and number with their noun: la primera vez (the first time), los primeros días (the first days).
- 1st — primero / primera
- 2nd — segundo / segunda
- 3rd — tercero / tercera
- 4th — cuarto
- 5th — quinto
- 6th — sexto
- 7th — séptimo
- 8th — octavo
- 9th — noveno
- 10th — décimo
Just like uno, the ordinals primero and tercero lose their final -o before a masculine noun: el primer día, el tercer piso.
Using numbers in real life
Saying prices
To ask a price you say ¿Cuánto cuesta? (“How much does it cost?”). An answer like 3,50 € is read as tres euros con cincuenta or tres con cincuenta. Remember the comma is the decimal point in most Spanish-speaking regions.
Giving your phone number
Phone numbers are usually spoken in pairs. A number like 612 34 56 78 is often read seis, doce, treinta y cuatro, cincuenta y seis, setenta y ocho. If pairing feels hard at first, it is perfectly fine to read each digit one by one.
Saying years
Unlike English, Spanish reads years as full numbers, not in pairs. So 1999 is mil novecientos noventa y nueve, and 2025 is dos mil veinticinco. Pair this skill with our guide to the months of the year in Spanish and the days of the week in Spanish so you can state any full date with confidence.
Common mistakes to avoid
- Splitting the twenties. Write veintidós as one word, not veinte y dos.
- Adding “y” in the hundreds. It is ciento uno, never “ciento y uno.” The y only appears between tens and units (treinta y uno).
- Forgetting gender. Use doscientas, una, and quinientas before feminine nouns.
- Pluralizing “mil.” Say tres mil, not “tres miles.”
- Dropping “de” after millón. It is un millón de personas.
- Losing accent marks. Marks on veintidós, dieciséis, and veintiún are not optional — they change the stress.
If you have already tackled numbers in another language — for example our guides to German numbers or Korean numbers — you will notice Spanish shares that same “blocks plus a connector” logic, which makes the transfer of skills quick.
How to practice and remember them
Numbers stick fastest when you attach them to things you care about. Count the stairs as you climb them, read prices aloud while shopping, say your age and your friends’ ages, and set your phone’s language to Spanish so times and dates appear in your target language. Flashcards help for the first twenty; after that, drill the patterns rather than the individual numbers. For a broader study plan, see our tips on how to learn Spanish, and warm up each session with a few Spanish greetings. If you want an authoritative reference for spelling and accents, the Real Academia Española and SpanishDict are excellent, free resources.
Frequently Asked Questions
How do I count to 100 in Spanish?
Memorize 0–15 as unique words, then learn 16–29 (which are written as single words), then the tens (treinta, cuarenta, cincuenta…). For any number in between, join the tens word, y, and a digit, as in cuarenta y siete (47). One hundred is cien.
What is the difference between cien and ciento?
Use cien for exactly 100 and directly before a noun (cien años). Use ciento when another number follows to form 101–199, as in ciento veinte (120). Do not put y right after ciento.
When do numbers change for gender in Spanish?
Uno and the hundreds from 200–900 change with gender. Say un libro / una mesa, and doscientos coches / doscientas motos. Most other numbers stay the same regardless of the noun.
Why is 21 written veintiuno instead of veinte y uno?
The numbers 16 through 29 were long ago contracted into single words in standard Spanish. The connecting y softened into an i and merged with the tens word, giving forms like dieciséis and veintiuno. From 31 upward, the separate three-word form returns.
How do you say years and dates with numbers?
Read years as complete numbers: 2025 is dos mil veinticinco. For a full date, combine the day, month, and year, as in el quince de mayo de dos mil veinticinco (May 15, 2025).
Ready to go from counting to conversation? At The Cognitio, our friendly tutors help you use Spanish numbers naturally in real situations — prices, dates, phone numbers, and everyday chat. Book a class and start learning Spanish with The Cognitio today. ¡Vamos!