Rewrite and polish · free AI tool, no sign-up
Free AI Grammar Checker
Fix grammar, spelling and punctuation - and see a short list of what was changed and why.
- Results in seconds
- Free daily generations
- No sign-up
- History stays in your browser
Result
Your draft will appear here
- Paste up to about 1,000 words at a time for the most careful check.
- "Fix mistakes only" keeps your wording; "improve clarity" also smooths awkward sentences.
- Review each change - a grammar checker cannot know the exact meaning you intended.
The AI is writing
This answer reached the length limit and may be cut off. Try "Shorter" or narrow your request.
AI can make mistakes. Check names, facts and figures before you send or publish.
Your recent results
Saved only in this browser.
How it works
- 1
Fill in the details
Answer a few short questions, or start from an example.
- 2
Generate
Our server sends your brief to an OpenAI GPT model and returns a draft in seconds.
- 3
Refine and use it
Make it shorter, longer or more formal with one click, then copy or download it.
Tips for better results
- Paste up to about 1,000 words at a time for the most careful check.
- "Fix mistakes only" keeps your wording; "improve clarity" also smooths awkward sentences.
- Review each change - a grammar checker cannot know the exact meaning you intended.
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Quick answer
Paste your text into the AI Grammar Checker and press Generate. It returns a corrected version and a short list of the main grammar, spelling and punctuation fixes, free and without an account.
Key facts
- Returns corrected text plus a list of the main fixes
- Covers grammar, spelling, punctuation and basic word choice
- Generated by OpenAI's gpt-4o-mini model via the A2Z Tools server
- Free, no sign-up, fair daily usage limit
- Not a professional proofread - review the changes
- Your text is not stored on A2Z Tools servers
What is this tool?
The AI Grammar Checker corrects everyday writing - emails, essays, posts and reports - and explains the main changes it made. Instead of underlining words one at a time, it returns the whole text corrected, followed by a short list of fixes so you can learn from them and decide what to keep.
How to use it
Check a few paragraphs at a time rather than a very long document; the list of fixes is easier to review and nothing gets lost. If the text uses deliberate style choices (brand names, dialogue, slang), look closely at the fixes and put back anything intentional.
- Paste or type the text you want to check.
- Press Generate.
- Read the list of main fixes to understand what changed.
- Compare the corrected text with your original and keep the changes you agree with.
- Copy the corrected text or download it.
Example
Input: "Me and my team has finished the report, its ready for you're review."
Corrected: "My team and I have finished the report; it's ready for your review."
Main fixes: "Me and my team" changed to "My team and I"; "has" changed to "have" to agree with the plural subject; "its" changed to "it's" (it is); "you're" changed to "your"; the comma splice replaced with a semicolon.
Common use cases
- Checking an email before sending it
- Polishing an essay or assignment draft
- Correcting social media posts and product descriptions
- Improving writing in English as a second language
- Tidying meeting notes or reports
- Learning common mistakes from the list of fixes
Benefits
- Shows what was changed, not just the final result.
- Handles the whole text at once, including punctuation and agreement errors.
- Useful for learners who want to understand their mistakes.
- Free, with no sign-up or browser extension to install.
Limitations
- Not a professional proofread - it can miss errors or introduce new ones.
- It may smooth wording in ways that change meaning, which matters in legal, technical or academic text.
- It does not check facts, citations or plagiarism.
- A fair daily usage limit applies.
Privacy & your data
What you type is sent through the A2Z Tools server to an OpenAI GPT model (gpt-4o-mini) to create the result. A2Z Tools does not store the text you enter or the results on its servers; it keeps only anonymous usage counts to apply the fair daily limit. Your recent results are saved only in your own browser (localStorage), and you can clear them at any time.
Avoid pasting confidential documents, personal data or passwords; if the full text is sensitive, check a representative section instead.
Frequently asked questions
Is this grammar checker free?
Yes. It is free with no account required, and each visitor has a fair daily usage limit.
Does it explain the corrections?
Yes. Along with the corrected text, it lists the main fixes so you can see what changed. It focuses on the most important changes rather than every tiny edit.
Can it replace a human proofreader?
No. It is good for catching common mistakes quickly, but for a thesis, contract, book or anything else high-stakes, a professional proofread is still worth it.
Does it handle British and American English?
It generally keeps the spelling style your text already uses. If you need one variant consistently, mention it at the start of your text and check spellings such as colour and color yourself.
Is my text saved?
A2Z Tools does not store the text you check or the corrected version. The text is sent to an OpenAI GPT model to make the corrections, and recent results are kept only in your browser.
Can it check languages other than English?
GPT models can often correct text in other widely used languages, but the tool is designed around English, so have results in other languages reviewed by a fluent speaker.
What if it changes something I wrote on purpose?
Keep your original. The list of fixes makes it easy to spot changes to brand names, dialogue or deliberately informal wording and put them back.
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