Free Portuguese Grammar Checker
Polish your Portuguese writing with AI-powered grammar corrections. From verb conjugation to accent placement, get native-level accuracy.
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Free: 5000 words per check. Upgrade for unlimited access.
Why Choose Our Free Portuguese Grammar Checker?
Brazilian & European Portuguese
Supports both Brazilian (PT-BR) and European (PT-PT) Portuguese, including differences in spelling, vocabulary, gerund usage, and pronoun placement.
Clitic Pronoun Placement
Portuguese clitic pronouns (me, te, se, nos) follow complex placement rules. Our AI checks for correct proclisis, enclisis, and mesoclisis usage.
Verb Conjugation Across Tenses
Verifies conjugation across all tenses including the personal infinitive and future subjunctive, which are unique to Portuguese among Romance languages.
Free vs Premium
| Feature | Free | Premium |
|---|---|---|
| Word Limit | 5000 words | Unlimited |
| Portuguese Grammar Check | Yes | Yes |
| Writing Score | Basic | Advanced |
| Auto-Fix All Errors | Yes | Yes |
| History | No | Yes |
| Priority Processing | No | Yes |
Frequently Asked Questions
Yes, our grammar checker fully supports both Brazilian Portuguese (PT-BR) and European Portuguese (PT-PT), including their distinct spelling, grammar, and vocabulary differences.
Yes, the personal infinitive is a unique feature of Portuguese grammar. Our tool checks for correct usage and conjugation of the personal infinitive in subordinate clauses.
Yes, the tool validates all Portuguese diacritical marks including acute accents, circumflex accents, tildes, graves, and cedillas according to the current orthographic agreement.
Our tool is fully updated for the 2009 Orthographic Agreement (Acordo Ortográfico). It recognizes that some spellings changed (like removing silent consonants in PT-PT: óptimo → ótimo) and handles words that still have accepted variant spellings in each dialect. You can select your preferred dialect for targeted corrections.
Yes, our AI understands that Brazilian Portuguese favors the gerund (estou fazendo) while European Portuguese prefers the infinitive construction (estou a fazer). It checks for consistency based on your selected dialect and flags mixing of the two forms within the same text.
Yes, the tool validates all Portuguese subjunctive forms including presente do subjuntivo, pretérito imperfeito do subjuntivo, and futuro do subjuntivo. It detects when the subjunctive is required after conjunctions like embora, para que, and caso, and checks for correct conjugation.
Absolutely. Our checker supports academic Portuguese conventions including formal register, proper use of the subjunctive and personal infinitive in scholarly arguments, correct clitic placement in formal writing, and the complex sentence structures expected in academic papers and dissertations.
WritingBot uses advanced AI that understands Portuguese grammar contextually rather than relying on simple rule matching. Our tool excels at catching errors in clitic placement, personal infinitive usage, and dialect-specific differences that rule-based tools frequently miss.
Portuguese text is typically analyzed within 2-5 seconds. Our AI checks grammar, spelling, accents, and style in a single comprehensive pass, delivering results quickly regardless of text length or complexity.
Yes, WritingBot is fully responsive and works on all smartphones and tablets. Visit writingbot.ai in your mobile browser, paste or type your Portuguese text, and get instant grammar corrections without needing to install any app.
Our tool catches common non-native errors including incorrect ser/estar usage, wrong preposition choices (em vs a vs para), gender agreement mistakes with nouns ending in -agem (which are feminine in Portuguese), incorrect plural formation of words ending in -ão, and confusion between por and para.
Free users can check Portuguese grammar using our Mistral AI model with a daily usage limit. Premium users unlock our advanced Claude AI model for superior accuracy on complex grammar patterns like clitic placement and subjunctive usage, plus higher daily limits and priority processing.
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