Grammar Checker — Free Online
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Under Construction
This tool uses rule-based checks. Advanced AI-powered grammar analysis is coming soon.
Paste your text and click “Check Grammar” to instantly find spelling mistakes, capitalization errors, repeated words, confused words, and more. Fix issues one by one or apply all suggestions at once with ToolMint.
Grammar Checker
Words
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Characters
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Sentences
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Read time
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What we check for
Repeated / double words
Capitalization after punctuation
First-letter capitalization
a/an article usage
Missing space after punctuation
Double spaces
Confused words (their/there…)
200+ common misspellings & typos
Run-on sentences (45+ words)
Missing ending punctuation
Space before punctuation
was/were + wrong verb form
Subject-verb agreement
Missing apostrophes in contractions
This is a rule-based grammar checker. For advanced grammar and style suggestions, consider using tools powered by AI language models.
How to Check Grammar Online
1
Paste your text
Type or paste the text you want to proofread.
2
Click Check Grammar
The tool scans for spelling, capitalization, repeated-word, and grammar issues.
3
Review suggestions
Each issue is highlighted with a suggestion you can accept or skip.
4
Apply fixes
Fix issues one by one or apply all suggestions at once, then copy the corrected text.
Frequently Asked Questions
- What types of errors does it detect?
- Spelling mistakes, capitalization errors, repeated words, commonly confused words (e.g. their/there), and run-on sentences.
- Is this AI-powered?
- The current version uses rule-based checks. An advanced AI-powered grammar analysis mode is under development.
- Does it work with non-English text?
- The rule-based engine currently focuses on English. Support for additional languages is planned.
- Can I apply all fixes at once?
- Yes. Click the 'Apply All' button to accept every suggestion in one step, or review them individually.
- Is my text sent to a server?
- No. All grammar and spelling checks run locally in your browser. Your text is never transmitted.