AI Grammar Checker
About this AI grammar checker
This free tool uses AI to find and fix grammar, spelling, and punctuation errors in any sentence or paragraph. Unlike older checkers that only catch mistakes matching a fixed list of rules, an AI model reads the whole sentence for context — so it catches context-dependent errors a rule-based checker would miss. It also doesn't rewrite your sentences or change your style like a paraphrasing tool would — it only corrects actual mistakes, and shows you exactly what was changed: struck-through text is what was wrong, highlighted text is the fix.
Paste your text, tap "Check Grammar," and the corrected version appears in a few seconds with every fix marked, ready to copy. Nothing you type is stored — your text is only sent when you tap the button, purely to check it. If you tap "Share," we'll save what you typed so your link keeps working whenever someone opens it.
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Frequently asked questions
Is this grammar checker free? ↓
Yes, it's completely free to use with no signup required.
What does it fix? ↓
Grammar, spelling, and punctuation errors. It doesn't rephrase your sentences or change your writing style — for that, try the Paraphrase Generator instead.
Is there a length limit? ↓
Yes, up to 3,000 characters per request, enough for a paragraph or two at a time.
Does this tool store my text? ↓
Your text is only sent to our server when you tap "Check Grammar," purely to check it. It isn't saved afterward — unless you tap "Share," which saves what you typed so your link keeps working whenever someone opens it.