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Free Grammar Checker — Fix Grammar & Spelling Online Instantly

Check grammar, spelling and punctuation with AI. Get a writing score out of 100, every error explained, and a corrected copy. Free — no sign-up required.

✓ Free✓ No Sign-up✓ Browser-based

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About the Free Grammar Checker — Fix Grammar & Spelling Online Instantly

Our free AI-powered grammar checker analyses your text for grammar errors, spelling mistakes, punctuation issues and writing style problems. It gives each piece of writing a score out of 100, lists every error with a clear explanation, and provides the fully corrected version of your text. Whether you are proofreading an essay, polishing a professional email, editing a blog post, or checking an assignment, our tool gives you instant, detailed feedback. Used by students, writers, bloggers, professionals and non-native English speakers worldwide.

How to Use the Free Grammar Checker — Fix Grammar & Spelling Online Instantly

1
Paste or type your text into the input box (up to 5,000 characters).
2
Click the Check Grammar button.
3
Review your writing score out of 100.
4
Read through each identified error with the original text, corrected version and explanation.
5
Copy the fully corrected version of your text from the Corrected Text section.

Frequently Asked Questions

What types of errors does the grammar checker detect?

The checker identifies grammar errors (incorrect verb tenses, subject-verb agreement, sentence fragments), spelling mistakes, punctuation errors (missing commas, incorrect apostrophes, run-on sentences) and style issues (wordiness, passive voice, unclear phrasing).

Is this grammar checker good for non-native English speakers?

Yes, it is particularly useful for non-native English speakers. It not only identifies errors but explains why each correction is needed, helping you learn and improve your English writing over time.

Can I use this to check essays and academic writing?

Yes. The grammar checker works well for academic essays, research papers, dissertations and reports. It checks grammar, spelling and punctuation. For academic style guidelines (APA, MLA, Chicago), always consult your institution's specific requirements in addition.

What does the writing score mean?

The score is out of 100 and reflects the overall grammatical quality of your text. 90–100 means excellent with few or no errors. 70–89 means good with minor issues. Below 70 suggests significant errors that need attention.