Spanish Numbers 1–100 (and Beyond): The Complete Beginner’s Guide

Numbers are the most immediately useful vocabulary in any language. Prices, times, dates, addresses, phone numbers, ages — you cannot get through a single day in Spanish without them. The good news: Spanish numbers are built from a small set of pieces and a few reliable patterns. Learn about thirty words and you can count to a million.

One to fifteen: the ones you memorise

These simply have to be learned — everything else is built from them:

uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve, diez, once, doce, trece, catorce, quince.

Sixteen to twenty-nine: the squashed ones

From 16 to 29, Spanish squashes “ten and six” style phrases into single words: dieciséis, diecisiete, dieciocho, diecinueve, veinte, veintiuno, veintidós, veintitrés, veinticuatro, veinticinco, veintiséis, veintisiete, veintiocho, veintinueve.

Notice the pattern: dieci- + unit, then veinti- + unit. Watch the accents on dieciséis, veintidós, veintitrés and veintiséis.

Thirty to ninety-nine: the regular ones

From 30 upwards, the system becomes beautifully regular: tens word + y + unit.

The tens: treinta (30), cuarenta (40), cincuenta (50), sesenta (60), setenta (70), ochenta (80), noventa (90).

So: treinta y uno (31), cuarenta y cinco (45), sesenta y siete (67), noventa y nueve (99). Three words, always, written separately.

The classic mix-ups: sesenta (60) vs setenta (70) trip up every learner — one letter apart and easily confused at speed. Same with cincuenta (50) and sesenta. Drill these pairs specifically.

Hundreds

cien (exactly 100), then ciento for 101–199: ciento uno, ciento cincuenta. The rest: doscientos (200), trescientos (300), cuatrocientos (400), quinientos (500 — irregular!), seiscientos (600), setecientos (700 — irregular), ochocientos (800), novecientos (900 — irregular).

Note that hundreds agree in gender: doscientas personas, quinientas libras.

Thousands and millions

mil (1,000) — no “un” needed: mil euros, not un mil. Then dos mil, diez mil, cien mil. A million is un millón, and it takes de before a noun: un millón de personas.

One trap for English speakers: in Spain and much of Latin America, the roles of commas and points are reversed in writing — 1.500 is one thousand five hundred, and 2,5 is two and a half.

The details that make you sound natural

Uno shortens to un before masculine nouns: un libro, veintiún años, treinta y un días. Before feminine nouns it becomes una: veintiuna páginas.

Telephone numbers are usually read in pairs in Spain: 654 32 10 98 becomes “seis-cincuenta y cuatro, treinta y dos, diez, noventa y ocho.” Practise your own number until it’s automatic — it’s the number you’ll say most.

Prices use the currency mid-sentence: tres euros con cincuenta (€3.50) in Spain; you’ll also hear simply tres cincuenta.

Years are read as full numbers, unlike English: 1998 is mil novecientos noventa y ocho — not “nineteen ninety-eight”. 2026 is dos mil veintiséis.

How to practise

Numbers respond brilliantly to little-and-often drilling woven into daily life. Read car number plates aloud in Spanish. Say prices to yourself as you shop. Do your phone number, your birth year, today’s date. The goal is automaticity: hearing setenta y cuatro and knowing it’s 74 without translating.

The final test, though, is live conversation — catching numbers at native speed, in context, with no pause button. That’s exactly what a tutor is for. Parlazo offers one-to-one video lessons with vetted Spanish tutors, pay-per-lesson with no subscription — a very good place to discover that you can, in fact, understand a phone number first time.