Free Online AI Grammar Checker

1. Paste the text you want proofread into the input box.
2. No options needed—the checker corrects grammar, spelling, and punctuation automatically.
3. Click Check Grammar and wait a moment while the AI generates a response.
4. Review the output for accuracy, then copy it with one click.

An AI grammar checker proofreads a passage for grammar, spelling, punctuation, and word-choice errors, returning a corrected version alongside a short list of the changes. Because it understands context rather than applying fixed rules, it catches subtle mistakes—subject-verb agreement, misused homophones, comma splices—that rule-based checkers often miss.

Students, professionals, and non-native English writers use it to polish emails, essays, and reports before sending. Crucially, it preserves your voice: it corrects errors rather than rewriting for style, so the result still sounds like you.

Your text is sent to a secure AI API to generate the corrections and is not stored afterward. Review the suggested changes before accepting them—AI is highly accurate but not infallible, and you remain the final editor of your own writing.