Check grammar and spelling with AI. Inline corrections with accept/reject.
Check your writing for grammar, spelling, and punctuation errors using AI. Corrections are highlighted inline — accept or reject each suggestion individually.
Upload your file using the tool above.
Adjust any settings to your preference.
Click the process button and wait for results.
Download your output using the download button.
Because grammar is not always clear-cut. Deliberate fragments, brand names, technical jargon and dialect differences all look like errors to a checker but are correct in context. Reviewing each suggestion lets you keep the voice you intended rather than having a tool flatten it into generic prose.
It recognises both and generally follows whichever convention dominates your text, so colour and color are not flagged simply for existing. Mixing them within one document is the common problem — worth a deliberate pass if you are writing for a specific market, since consistency is what readers actually notice.
No checker does. It reliably catches spelling, agreement, punctuation and tense errors. It is weaker on meaning-level problems: the wrong word that is spelled correctly, a misplaced modifier that technically parses, or a sentence that is grammatical but says the opposite of what you intended. Human proofreading still matters for anything important.
Yes, AI Grammar Checker is completely free. No signup, no account, and no watermark on outputs. A Pro tier is available for 100 AI ops/day and larger file sizes.
AI Grammar Checker sends your file to our AI provider over an encrypted connection so the model can process it. It is deleted after processing and is not used to train models. If a file is confidential, use one of our in-browser tools instead, which never upload anything.
How it works: Powered by AI, which analyzes your text for grammatical errors, spelling mistakes, subject-verb agreement issues, tense inconsistencies, and unclear phrasing. Each suggestion includes the original text, the corrected version, and the reason for the change.
Accept & reject: You stay in control — accept a suggestion to apply it directly to your text, or reject it to keep the original. This lets you review AI suggestions rather than blindly applying them.
Privacy: Your text is sent to the AI service for processing and is not stored by this application. Review our AI provider's privacy policy for model data handling.