Check Portuguese spelling, grammar and punctuation for free. Paste your text, press Check and fix mistakes in one click. Corretor ortográfico e gramatical grátis.
At a glance
- Price
- Free
- Sign-up
- Not required
- Checks
- Grammar, spelling, punctuation and style
- Language
- Português do Brasil (Portuguese, Brazil)
- Text limit
- 20,000 characters per check
- Privacy
- Not stored by SpellMistake
- Engine
- LanguageTool (open source) plus SpellMistake rules
What the Portuguese grammar checker catches
- Accents and diacritics: á, â, ã, é, ê, í, ó, ô, õ, ú, ç
- Crase (à) rules
- Common confusions such as a gente vs agente
- Verb agreement and conjugation
- Brazilian and European Portuguese spelling
Common Portuguese mistakes
| Incorrect | Correct | Rule |
|---|---|---|
| Vou a escola amanhã. | Vou à escola amanhã. | Crase before a feminine noun |
| Agente vai sair hoje. | A gente vai sair hoje. | a gente means we |
How to check your Portuguese text
- Paste or type your Portuguese text into the editor above. The language is already set to Portuguese, and you can switch to European Portuguese in the language menu.
- Press Check text. Mistakes are highlighted and explained on the right.
- Click a suggestion to accept it, or press Fix all, then copy your corrected text.
About Portuguese
Portuguese is spoken in Brazil, Portugal, Angola, Mozambique and other countries. Brazilian and European Portuguese differ in some spelling and grammar, so you can choose either variant.
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- All languages43 languages supported
Prefer to read in Portuguese? Open this page in Portuguese: Corretor ortográfico em português.
About writing in Portuguese
Portuguese has two standard varieties, Brazilian and European, with different spellings and some different grammar. Most mistakes in both come from accents, the crase (à), and words that sound alike such as mas and mais. The checker above uses LanguageTool’s Portuguese rules and lets you choose Brazil or Portugal in the language menu.
5 common mistakes in Portuguese
1. Missing crase
The crase (à) joins the preposition a with the article a. Use it before feminine nouns that take an article after verbs like ir: vou à praia, but vou a Lisboa.
❌ Vou a escola amanhã.
✅ Vou à escola amanhã.
2. Mas or mais
Mas means “but”. Mais means “more”. They sound very similar in many accents.
❌ Eu quero ir, mais não posso.
✅ Eu quero ir, mas não posso.
3. A or há with time
For time that has passed, use há (from haver): há dez anos means “ten years ago” or “for ten years”. Use a for the future: daqui a dez anos.
❌ Moro aqui a dez anos.
✅ Moro aqui há dez anos.
4. Missing accents
Accents change meaning and stress: esta (this) and está (is), e (and) and é (is).
❌ Voce esta bem?
✅ Você está bem?
5. Porque or por que
In Brazilian Portuguese, a direct question takes por que (why). Porque (because) answers it. European Portuguese often writes porque in questions too, which the Portugal option accepts.
❌ Porque você não veio?
✅ Por que você não veio?
Try it with a sample sentence
Three classic errors in one sentence: a instead of há, mais instead of mas, and a missing crase. Paste it into the checker above:
❌ Eu moro aqui a cinco anos, mais nunca fui a praia.
✅ Eu moro aqui há cinco anos, mas nunca fui à praia.
Frequently asked questions
Is the Portuguese grammar checker free?
Yes. It is completely free, with no sign-up and no download.
Does it check European Portuguese?
Yes. Choose Português europeu in the language menu.
Is my Portuguese text stored?
SpellMistake does not save it. To check it, your text is sent to the LanguageTool service, as explained in our Privacy Policy.
Brazilian or European Portuguese?
Both. Choose Português do Brasil or Português europeu in the language menu. Each option accepts its own spellings, such as fato and facto.
Does it check the crase?
Yes. It flags common cases where à is missing or used wrongly, such as before masculine nouns or verbs.
Is there a version of this page in Portuguese?
Yes. The corretor ortográfico page has the same checker with the interface in Portuguese.