Tudo vs Todo | Portuguese (Portugal) Grammar

Both tudo and todo translate into English as all or everything, and both show up all the time. The bad news: they are not interchangeable, and swapping them is a classic learner error. The good news: the rule is short, the exceptions are few, and once you lock in the pattern it stops being confusing within a week.

The key distinction is abstract vs specific. Tudo is an invariable pronoun that refers to the whole unspecified thing — everything in general, whatever there is, the lot. Todo/toda/todos/todas is a variable determiner / pronoun that refers to a specific total — this whole day, all these books, every afternoon. If you can point to the set you're quantifying, you want the variable form; if you're gesturing at "everything" as an undifferentiated blob, you want tudo.

The quick answer

Use tudo when everything is abstract and self-contained — sei tudo, está tudo bem, obrigada por tudo. Use todo / toda / todos / todas when you're specifying which total: todo o dia (the whole day), toda a cidade (the whole city), todos os dias (every day), todas as manhãs (every morning).

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Quick reflex: if the next word is a noun (with or without an article), you almost certainly need the variable form todo/toda/todos/todas. If the next word is a verb, adjective, adverb, or a pause, you likely need tudo. Tudo bem? vs toda a manhã.

Tudo — the invariable "everything"

Tudo is a pronoun. It never agrees, never combines with an article, and always refers to an unspecified totality — the whole thing, whatever the thing might be.

Tudo as the object of a verb

Já sei tudo, não precisas de repetir.

I already know everything, you don't need to repeat.

Ele come tudo, não faz birras nenhumas.

He eats everything, he doesn't fuss at all.

Perdi tudo o que tinha guardado no computador.

I lost everything I'd saved on the computer.

Tudo as the subject

Tudo correu bem, não te preocupes.

Everything went well, don't worry.

Tudo isto é muito estranho.

All this is very strange.

Tudo in set phrases — extremely common

Tudo bem? — Sim, tudo bem, obrigada.

All good? — Yes, all good, thanks.

Obrigada por tudo, a sério.

Thank you for everything, really.

É tudo ou nada.

It's all or nothing.

Ele fez tudo e mais alguma coisa para te ajudar.

He did everything and then some to help you.

Tudo + demonstrative / relative

Tudo frequently combines with isto / isso / aquilo (neuter demonstratives) and with o que (what / that which).

Não acredito em tudo isso.

I don't believe in all that.

Tudo o que disseste faz sentido.

Everything you said makes sense.

Lembra-te de tudo aquilo que combinámos.

Remember everything we agreed on.

Todo / toda / todos / todas — the variable "all / whole / every"

Todo agrees with the noun in gender and number. It functions either as a determiner (before a noun phrase) or as a pronoun (standing alone after the noun has been established). It always refers to a specific total.

	Masculine	Feminine
Singular	todo	toda
Plural	todos	todas

Singular: "the whole / all (of) the..."

With a singular noun, todo + o/a + noun means the whole of something. The article is obligatory in standard PT-PT.

Chovia todo o dia, não pude sair.

It rained all day long, I couldn't go out.

Toda a cidade estava a festejar o aniversário do Porto.

The whole city was celebrating Porto's birthday.

Fui à aula toda a semana passada.

I went to class the whole of last week.

Passei toda a manhã a arrumar a casa.

I spent the whole morning tidying the house.

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This is a critical PT-PT vs BR difference. Brazilian Portuguese allows todo dia (without article) to mean every day (= todos os dias). In European Portuguese, todo o dia means the whole day / all day, not every day. PT-PT forces the distinction through the article: todo o dia (whole day) vs todos os dias (every day). If you drop the article in PT-PT, you get something marked and unusual.

Plural: "all the / every"

With a plural noun, todos + os / todas + as + noun means all the (as a block) or, in common time expressions, every.

Todos os livros que comprei estão em caixas ainda.

All the books I bought are still in boxes.

Convidámos todos os nossos amigos.

We invited all our friends.

Todas as janelas estavam abertas quando cheguei.

All the windows were open when I arrived.

Every day / every morning — the habitual use

With time nouns in the plural, todos os / todas as is the standard way to say every X.

Levo o miúdo à escola todos os dias.

I take the kid to school every day.

Vou ao ginásio três vezes por semana, todas as manhãs.

I go to the gym three times a week, every morning (on those days).

Há missa todas as tardes de domingo.

There's mass every Sunday afternoon.

Falamos todas as semanas, mesmo quando ela está fora.

We speak every week, even when she's away.

Whole morning vs every morning — the critical contrast

This is the contrast that the PT-PT learner most needs to internalise.

Passei toda a manhã a ler.

I spent the whole morning reading. (one specific morning, its entire duration)

Passo todas as manhãs a ler.

I spend every morning reading. (habitual — every morning, one after another)

Choveu todo o dia.

It rained all day. (one specific day)

Chove todos os dias no inverno.

It rains every day in winter. (habitual)

Todo/todos as a pronoun — without a noun

When the noun has already been mentioned, todo and its forms can stand alone as a pronoun. This often pairs with a clitic pronoun for emphasis.

Vi todos. — Viste? — Todos os filmes dele, sim.

I saw them all. — You did? — All his films, yes.

Vi-os todos no mesmo dia.

I saw them all in the same day. (emphatic — 'them, every one')

Todas vieram à festa, até a Marta.

They all (fem.) came to the party, even Marta.

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The pattern vi-os todos (saw + object clitic + todos) is common and emphatic, equivalent to I saw them all / I saw all of them. It stacks the meaning: the os says "them", the todos says "every one of them". This doubling is characteristic of PT-PT and very natural in speech.

Idioms worth knowing

Em todo o caso, avisa-me se precisares.

In any case, let me know if you need anything.

Fomos todos juntos à praia.

We all went to the beach together.

Tudo ou nada — não há meio-termo.

All or nothing — there's no middle ground.

Antes de mais nada, quero agradecer a todos.

First of all, I want to thank everyone.

Toda a gente sabe disso.

Everyone knows that. (literally 'all the people')

Toda a gente is PT-PT's everyday way of saying everyone / everybody. BR uses todo mundo instead; the PT-PT equivalent with mundo (todo o mundo) does exist but is slightly more literary.

Comparison table

Portuguese	English	Meaning
tudo	everything	abstract, unspecified totality
todo o dia	the whole day / all day	one specific day, its full span
toda a semana	the whole week / all week	one specific week, its full span
todos os dias	every day	habitual / recurring
todas as semanas	every week	habitual / recurring
toda a cidade	the whole city	the city in its entirety
todos os livros	all the books	the complete set of books
toda a gente	everyone	PT-PT idiom, lit. 'all the people'
tudo bem?	all good?	greeting / check-in
tudo o que	everything that	relative: tudo o que queres
em todo o caso	in any case	fixed expression

Walking through tricky examples

1. Gostei de _ o que disseste. → the relative o que triggers tudo o que. Tudo.

2. _ o dia fiquei em casa. → "the whole day" (specific, singular) → todo o dia.

3. Vou ao café _ as manhãs. → "every morning" (habitual, plural) → todas as manhãs.

4. _ está bem, não te preocupes. → abstract everything, subject → tudo.

5. _ a família veio ao casamento. → "the whole family" (specific, singular feminine) → toda a família.

6. Já comeste _? → abstract everything, object → tudo (já comeste tudo?).

7. Convidei _ os meus colegas. → "all my colleagues" (specific, plural masculine) → todos os meus colegas.

8. Obrigada por _. → abstract, set phrase → tudo.

Common mistakes

❌ Vou ao café todo dia.

Incorrect in PT-PT — this construction (without the article) is Brazilian. In PT-PT, the article is required with singular *todo*, and for 'every day' you need the plural.

✅ Vou ao café todos os dias.

I go to the café every day.

❌ Passei todo dia em casa.

Incorrect in PT-PT — the article is obligatory with singular *todo*.

✅ Passei todo o dia em casa.

I spent the whole day at home.

❌ Sei tudo os meus amigos.

Incorrect — before a plural noun you need the variable *todos*, not *tudo*.

✅ Conheço todos os meus amigos desde a escola.

I've known all my friends since school.

❌ Todo está bem.

Incorrect — abstract 'everything' as a sentence subject is *tudo*, not *todo*.

✅ Tudo está bem.

Everything's fine.

❌ Obrigada por todo.

Incorrect — the set phrase is *por tudo* (abstract everything), not *por todo*.

✅ Obrigada por tudo.

Thanks for everything.

❌ Toda a gente sabem disso.

Incorrect agreement — *toda a gente* is grammatically singular in PT-PT, so the verb is singular too.

✅ Toda a gente sabe disso.

Everyone knows that.

Key takeaways

Tudo is invariable and refers to an abstract, unspecified totality — everything as a blob.
Todo/toda/todos/todas is variable and refers to a specific total — a whole X or every X.
In PT-PT, singular todo almost always requires the article: todo *o dia, toda **a semana. Dropping the article (*todo dia) is Brazilian and means something different.
Singular todo o X = the whole X (one specific). Plural todos os X = all the X (the complete set) or every X (habitual).
Tudo pairs with verbs, relatives (tudo o que), demonstratives (tudo isto), and set phrases (tudo bem, por tudo). Todo pairs with a noun phrase that you can count or point to.