Grammar Checker
Free AI grammar checker — find and fix grammar, punctuation and style mistakes with explanations for every correction. No signup needed.
About the Grammar Checker
This free AI grammar checker finds and fixes grammar, punctuation and style issues in any English text. Paste your writing, click Check grammar, and you get two things: the fully corrected text ready to copy, and a table listing every change — what was wrong, what it was changed to, and a short explanation of why.
Because each correction comes with a reason, the tool doubles as a learning aid: you see the pattern behind your mistakes (subject-verb agreement, tense, comma use) instead of blindly accepting fixes. There is no signup, no word limit purchase and no browser extension to install.
AI grammar checking is very good but not infallible — it can occasionally miss an error or suggest a change of style rather than correctness. Review the corrected text before sending, especially for important emails, applications and published work.
How to Use the Grammar Checker
- 1Paste your text into the box (up to about 8,000 characters).
- 2Click Check grammar and wait a few seconds.
- 3Review the corrected text and the table of corrections with explanations.
- 4Copy the corrected version, or fix your original using the explanations.
Frequently Asked Questions
Is this grammar checker free?
Yes — free with no signup and no premium tier. Requests are rate-limited per visitor so the service stays fast for everyone.
How is this different from Grammarly?
Grammarly is a full writing assistant with browser and Office integrations, tone detection and a paid premium tier. This tool does the core job — a one-off grammar, punctuation and style check with explanations — free in the browser with nothing to install. For checking a piece of text before you send or publish it, it covers the same ground; for always-on checking as you type everywhere, an installed assistant is more convenient.
What kinds of errors does it catch?
Grammar (agreement, tense, articles, word order), punctuation (commas, apostrophes, run-ons) and clear style problems such as wrong word choice. It corrects mistakes without rewriting your voice — if you want a full rewrite, use the paraphrasing tool or article rewriter instead.
Does it work for languages other than English?
It works best for English. The AI can often correct other major languages too, but accuracy is not guaranteed — review non-English corrections carefully.
Is my text stored anywhere?
Your text is sent to an AI service to produce the corrections and returned to your browser. Avoid pasting confidential or personal information into any online AI tool.