AI Grammar Checker
Check text for common grammar and style mistakes using built-in rules — a basic rule-based checker — free, fast and private.
How to use AI Grammar Checker
- Paste your text into the box.
- Click Check Grammar.
- Review each flagged issue and fix it.
- Re-check after editing.
Important: this is a BASIC rule-based checker (double spaces, repeated words, capitals, a few common typos). It is not a full grammar AI and cannot catch every mistake — always proofread your final text.
Frequently Asked Questions
Does it catch every grammar mistake?
No. This is a basic rule-based checker: it finds double spaces, repeated words, missing capitals, missing final punctuation and a few common confusions. It is not a full grammar AI — proofread your final text yourself.
Is this a real AI model?
No. This is a rule-based helper that restructures and expands text using built-in templates and pattern rules. It is not a live AI model and needs no API key.
Is it free?
Yes, it is 100% free with no sign-up.
Is my text uploaded?
No. Your text stays in your browser and is never sent to a server.