Free Grammar Checker
Paste any English text below and instantly fix grammar, spelling, and punctuation mistakes. Our AI-powered checker returns three polished versions: corrected, natural, and formal, in seconds. No sign-up required.
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What is a grammar checker?
A grammar checker is a writing tool that scans your text for grammatical errors, spelling mistakes, punctuation issues, and awkward phrasing. It works by comparing your sentences against language rules and patterns learned from millions of well-written documents.
Unlike a basic spellchecker built into your word processor, a modern AI grammar checker understands context. It can tell whether you meant "their" or "they're," flag subject-verb disagreement, spot run-on sentences, and even suggest ways to make your writing clearer and more concise. Think of it as a proofreader that never gets tired and works in real time.
Whether you're writing an email to a colleague, polishing a college essay, or drafting a blog post, a grammar checker helps you communicate with confidence. It removes the guesswork from English grammar so you can focus on what you actually want to say, not on whether you placed a comma correctly.
This page is the main correction hub for the site, so it is the best starting point before you move into a more specific workflow. Use the essay checker for longer academic drafts, the email checker for professional messages, the paraphrasing tool or sentence rewriter for rewording, and the punctuation checker or readability checker when you need more focused editing.
How to use this grammar checker
- Paste or type your text into the input box at the top of this page.
- Click the Fix Grammar button to run the AI analysis.
- Review the three output versions: corrected, natural, and formal, and choose the one that fits your needs.
- Click any result card to copy the text to your clipboard instantly.
- Read the key fixes and grammar notes to understand what was changed and why, so you learn as you go.
Examples of grammar corrections
Me and him went to the store yesterday.
He and I went to the store yesterday.
Their going to loose there minds when they here the news.
They're going to lose their minds when they hear the news.
The report was wrote by the team and it needs reviewed.
The report was written by the team and it needs to be reviewed.
She don't know nothing about the meeting that was suppose to happen.
She doesn't know anything about the meeting that was supposed to happen.
Why use an AI grammar checker
Clarity
Eliminate confusing phrasing and ambiguous sentences so your reader understands you the first time.
Professionalism
Typos and grammar mistakes undermine credibility. Clean writing signals competence and attention to detail.
Speed
Instead of re-reading your draft five times, get instant corrections and move on with confidence.
Common grammar mistakes
- Confusing "your" and "you're"
- Using "their," "there," and "they're" incorrectly
- Subject-verb disagreement ("The team are" vs. "The team is")
- Run-on sentences and comma splices
- Misplaced or dangling modifiers
- Incorrect use of apostrophes in possessives
- Mixing up "affect" and "effect"
- Using "less" when "fewer" is correct
Related writing tools
After you check grammar mistakes here, continue with the essay checker, email checker, paraphrasing tool, sentence rewriter, punctuation checker, and readability checker to refine the same draft from different angles.
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