Writing

Fix grammar and spelling instantly

Paste your writing and get corrected text with the fixes explained.

For the best results: Add context: who it's for, the tone you want, and the key points to include. The more specific you are, the less editing you'll need to do.

AI can make mistakes. Check important information before relying on it.

FREE · PRIVATE · NO SIGN UP REQUIRED · NO ACCOUNT NEEDED

What is Grammar Checker?

Grammar Checker is a free AI writing tool that takes your writing and returns a corrected version with each fix explained. Your brief is routed to a model suited to writing work and comes back as polished, original writing drafts tailored to your tone and purpose in seconds. No account stands between you and the draft, and what you write is cleared when you close the tab, not banked.

✦Write immediately, with no account standing between you and the draft
✦Every request is routed to a model suited to writing work
✦Drafts and prompts are cleared when you close the tab

Models: It routes across leading models including Gemini, Llama and Mistral families, picking the best available one per request. The exact model used is shown after every response.

See it in action

A team lead is firing off a quick message to a colleague and runs it through before hitting send, since it lands in a shared channel where slips get seen.

What you type

Their heading to the client site tomorrow, I'll email you the updated brief tonight.

What you get

Corrected: They're heading to the client site tomorrow. I'll email you the updated brief tonight. Fixes: 1. Their to They're. 'Their' is the possessive (their car). You meant 'they are', which contracts to 'they're'. A spellchecker waves this through because 'their' is spelled correctly, so it's a homophone slip, not a typo. 2. Comma splice. 'Their heading to the client site tomorrow' and 'I'll email you the updated brief tonight' are two complete sentences joined by nothing but a comma. Split them with a period, or link them with a word like 'so'.

Tip: The explanations are the part worth reading even when you're in a hurry. Comma splices and their-versus-they're are habits, not one-offs, so once you can see the rule behind a fix (two full sentences need more than a comma between them), you start catching it in your next draft instead of pasting the same slip in again a week later.

Use cases

What people use it for

Check a job application email for slips when English is your second language.

Give a thesis chapter its final proof before your supervisor reads a word.

Catch the typo in a client proposal that would undercut the price you're asking.

Who uses Grammar Checker?

Job applicants

catching the small slips in a resume or application that quietly cost interviews

Solo bloggers

cleaning up a draft before publishing without paying for a subscription proofreading service

Non-native writers

learning from the explanations so they stop repeating the same mistake in future writing

How it works

1Describe what you need written, with tone and audience.
2A writing-tuned model drafts it to your brief.
3Copy the draft, or ask for a tighter, longer, or different-tone version.

Tips for the best results

Paste the text as you wrote it, without pre-correcting, so the checker sees the genuine errors.
Tell it which English you want, Australian, British or American, to avoid the wrong spellings being flagged.
Read the reason attached to each fix; that is what stops the mistake happening again.
Reject any change that alters your meaning or voice, since not every suggestion improves the sentence.
Run a final pass after your own edits, because new typos creep in during rewriting.

FAQ

Frequently asked questions

Why explain the fixes instead of just correcting them?

Because errors repeat. Once you see that you always drop the article before 'information', or splice two sentences with a comma, you stop doing it, the explanation converts a one-off correction into a pattern you can catch yourself. Even in a hurry, skim the explanations; self-correcting in your next draft is worth more than any single cleaned-up document.

Will it rewrite my style, or only fix actual errors?

Corrections stay on genuine errors, grammar, spelling, punctuation, misused words. Sentences that are awkward but technically correct get flagged as suggestions rather than silently rewritten, so your voice survives the pass. If what you actually want is a full style rework rather than a proof, that's the Paraphrasing Tool's job, not this one's.

Does it correct to Australian, British or American English?

Tell it which and it enforces that variety consistently, color versus color, organize versus organize, and the punctuation conventions that go with each. Left unstated, it follows the dominant signals in your text, which works until your document mixes both. Declaring the variety up front matters most on collaborative documents where different authors have left different spellings behind.

What does it catch beyond spelling mistakes?

Subject-verb agreement, tense that drifts across paragraphs, misplaced apostrophes, run-on sentences, and the homophones a spellchecker waves through, their and there, affect and effect. It also catches word-choice errors where the word exists but isn't the one you meant. Those last two categories are exactly what standard spellcheck misses, and they're the errors readers judge hardest.

Should I accept every correction?

Read before accepting. On hard grammar it's rarely wrong, but some flags are judgment calls, a deliberate sentence fragment for emphasis, an industry phrasing that looks odd outside your field. The explanations make disagreement easy: when the stated reasoning doesn't apply to what you intended, keep your version. It's a proofreader making a case, not an authority issuing rulings.

Is this grammar checker free with no sign-up?

Yes. Paste your writing and get corrected text with the fixes explained, at no cost and with no account required. There is no daily cap hidden behind a subscription and no watermark. Copy the clean version straight back into your document when you are done.

Can it check grammar in other languages?

Yes. Paste text in the language you wrote it in and ask for corrections in that language. It recognizes grammar and spelling rules across most widely spoken languages, which is useful when you write in more than one and want each checked properly.

How long a document can I check at once?

You can paste substantial passages in a single go. For a very long document, split it into sections so every correction and its explanation stays easy to review. Checking in parts also helps you catch the new slips that creep in while you edit earlier paragraphs.

What are the usage limits?

Writing tools are unmetered during the current free launch phase, draft, redraft, and polish without counting requests. Only a short per-minute anti-abuse limit applies, which normal writing never touches. Paid plans with higher limits and priority model access are coming soon.

Also useful