Learning the numbers in Portuguese is one of the fastest ways to feel capable in a new language, because you use them the moment you shop, tell time, share your phone number, or ask a price. Whether you are heading to Lisbon or Rio de Janeiro, this 2026 guide gives you clearer tables, more real examples, and smarter memory tricks than a quick vocabulary list ever could. Let’s count from zero all the way to a billion—the right way.

Why Numbers in Portuguese Matter More Than You Think

Numbers are “high-frequency” vocabulary: you meet them constantly, so mastering them early pays off daily. A confident speaker who fumbles digits still sounds like a beginner at the market or the train station.

Portuguese also has two major standards—European Portuguese (Portugal) and Brazilian Portuguese. The good news? The core numbers are almost identical. We’ll flag the few differences as they come up so you never get caught out.

Cardinal Numbers in Portuguese: 0 to 20

Cardinal numbers answer “how many?” The first twenty are the foundation, so learn these before anything else. Notice how dezasseis onward simply combines “ten” and a smaller digit.

The Gender Trap: um/uma and dois/duas

Here is a detail many guides skip. In Portuguese, “one” and “two” change to match the gender of the noun. Say um livro (one book, masculine) but uma mesa (one table, feminine).

The same rule hits “two”: dois cafés (two coffees) versus duas cervejas (two beers). No other cardinal numbers change for gender—only the hundreds do, which we’ll cover below.

Counting the Tens, Hundreds, and Big Numbers

Once past twenty, Portuguese becomes wonderfully logical. You join a “ten” word to a smaller number with the word e (“and”): vinte e um (21), trinta e cinco (35), noventa e nove (99).

Watch cem versus cento: exactly 100 is cem, but 101–199 use cento, as in cento e cinquenta (150). This is a classic learner slip, so drill it early.

The hundreds from 200 also agree in gender: duzentos livros but duzentas páginas. That’s the second and final place gender matters.

Millions, Billions, and the “False Friend”

Big numbers scale predictably: dois milhões (2 million), mil milhões or um bilião (one billion in Portugal). In Brazil, one billion is um bilhão. For deeper reference, the Wiktionary Portuguese numbers appendix lists the full scale.

Ordinal Numbers in Portuguese

Ordinals answer “in what order?”—first, second, third. Unlike cardinals, every ordinal agrees in gender and number: primeiro/primeira, primeiros/primeiras.

• 1st — primeiro / primeira
• 2nd — segundo / segunda
• 3rd — terceiro / terceira
• 4th — quarto / quarta
• 5th — quinto / quinta
• 10th — décimo / décima
• 20th — vigésimo / vigésima

In everyday speech, Portuguese speakers often replace higher ordinals with cardinals. For a king or a century, they keep ordinals up to ten (Dom João VI = “sexto”) but switch to cardinals afterward (Papa João Paulo II is read “segundo,” yet século XXI is often “vinte e um”).

Real-World Examples You’ll Actually Use

Vocabulary sticks when it’s tied to real situations. Here are numbers in Portuguese in the wild, drawn from conversations you’ll have on your first trip.

1. Prices: “Quanto custa?” → “São doze euros e cinquenta.” (It’s €12.50.)
2. Phone numbers: Spoken in pairs—91 becomes “noventa e um,” not “nine, one.”
3. Time: “São três e meia.” (It’s half past three.)
4. Age: “Tenho vinte e oito anos.” (I’m 28.)
5. Dates: “Hoje é dia nove.” Note that dates use cardinals, except the first: o primeiro de maio.

One practical tip from tutoring hundreds of beginners: practice your own phone number, age, and birth year out loud daily. These personal facts anchor the abstract digits to memory faster than any flashcard app.

European vs Brazilian Portuguese: A Quick Comparison

Notice both variants use a comma for decimals—três vírgula catorze for 3.14. This trips up English speakers used to a decimal point. The Portuguese public broadcaster RTP is a great free source for hearing native numbers in context.

Frequently Asked Questions

How do you say numbers in Portuguese from 1 to 10?

They are: um (1), dois (2), três (3), quatro (4), cinco (5), seis (6), sete (7), oito (8), nove (9), and dez (10). Master these first, since every larger number builds on them.

Do numbers in Portuguese change for gender?

Only three groups change: “one” (um/uma), “two” (dois/duas), and the hundreds from 200 upward (duzentos/duzentas). All ordinal numbers also agree in gender and number.

What is the difference between “cem” and “cento”?

Use cem for exactly 100 and for 100 followed by nothing (100 books = cem livros). Use cento for 101 to 199, as in cento e vinte (120).

Are numbers the same in Brazilian and European Portuguese?

Almost entirely, yes. The main differences are spellings like dezesseis (Brazil) versus dezasseis (Portugal), and the word for “billion.” Everything else matches.

Conclusion: Your Fastest Path to Fluency

You now have the full system—cardinals, ordinals, gender rules, big numbers, and real examples—to use numbers in Portuguese with genuine confidence. Practice a little every day, say your personal facts out loud, and the digits will become second nature within weeks.

Ready to lock it in with live feedback? Book a personalized session with a native-level tutor at The Cognitio, explore more free lessons on our language learning blog, or find your perfect Portuguese tutor today and start counting like a local.