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AI Grammar Checker

Paste your text and get a corrected version with a list of every fix. Free, powered by AI.

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What it checks

This tool reviews your writing for three things: grammar (subject–verb agreement, verb tenses, articles, prepositions, sentence structure), spelling (misspelled words, typos, commonly confused pairs like "their/there" and "its/it's"), and punctuation (missing commas and periods, misplaced apostrophes, quotation marks).

Because it's powered by an AI language model rather than a fixed rule list, it reads your sentences in context. A traditional spellchecker sees "then" and "than" as two correctly spelled words and moves on — this tool notices when the wrong one is used and suggests the right swap based on what the sentence actually means.

How to read the corrections list

Every fix appears twice: once applied inside the corrected text, and once listed below it. Each entry follows the same pattern — the original wording, an arrow, the corrected wording, and a short reason in parentheses. For example: "recieve → recieved (spelling)" or "he don't → he doesn't (subject–verb agreement)". Scan the list to see exactly what changed and why nothing was silently rewritten. If the AI finds nothing to fix, you'll see a "No errors found" message instead.

Tips

  • Works best on paragraphs under roughly 500 words. For long documents, check section by section.
  • The AI may flag intentional style choices — sentence fragments, starting with "And", casual contractions — as errors. Review each suggestion and keep your voice.
  • Use the corrected output as a second draft, not a final authority: accept the fixes that improve clarity and reject any that change your meaning.

Frequently asked questions

Is this grammar checker free?
Yes. The AI Grammar Checker is completely free — no signup, no account, and no payment. Check as many paragraphs as you need.
What languages does it support?
The checker works best in English, where it catches the widest range of grammar, spelling, and punctuation issues. It can process other major languages, but accuracy is highest for English text.
Does it store my text?
No. Your text is sent through a secure server-side AI proxy for processing, and the corrected version is returned to you immediately. Nothing is stored, logged, or used for training.
Can it fix punctuation?
Yes. It adds missing commas, periods, apostrophes, and question marks, fixes misplaced punctuation, and corrects quotation mark usage alongside grammar and spelling.