Free Online Grammar Checker for Clearer Writing

Paste an email, essay or cover letter and get back a clean version with each change listed, plus the rule behind a mistake if you ask.

Free · Instant results

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No sign-up. PDF, Word (.docx), text. Scanned PDFs hold no text — paste the content instead.

Grammar Checker: what it's good for

A typo in a job application, a wrong "their" in a message to a client, a comma splice in your essay: this free grammar checker catches them before anyone else does. Paste your text or upload a document, and each mistake is underlined in place with the fix and the rule behind it. You decide, one by one, what to apply and what to leave alone — no account needed.

Getting started with Grammar Checker

There's nothing to download and no account to open. Type or paste your request into the box at the top of this page, and Grammar Checker gets back to you within seconds — at any hour, at no cost.

Everyday ways to put Grammar Checker to work

  • Give a job application or cover letter a last pass before you hit send
  • Clean up an email to a client, a landlord or your child's school
  • Check a school essay or report the night before it's due
  • Tidy a post, a listing or a newsletter before it goes public
  • Learn from your recurring slip-ups by reading the rule shown with each fix

Quick answers

Does it only fix spelling, or style too?
Both. Spelling, agreement, verb forms, punctuation and syntax come first; style suggestions — repetition, clunky phrasing, clichés — are marked as optional, so you can skip them and keep just the real errors.
Will I know why something was changed?
Yes. Every suggestion shows the original, the replacement and a short note on the rule involved, which makes it easy to spot the mistakes you tend to repeat.
Can I check a text that isn't in English?
You can. French, Spanish, German and many other languages work just as well — there's nothing to set, the language is picked up from your text.
How does it compare with Grammarly?
Grammarly flags issues while you type. Here you paste a finished draft and review every suggestion in one go, in whatever language you wrote it. Plenty of people use both: one while drafting, this one for the final check.
Will it rewrite my text in its own voice?
No. It flags mistakes rather than rewriting your sentences, and nothing changes until you click Apply — or "Correct everything" if you trust the whole batch. Your tone and word choices stay yours.
Is it good enough for a thesis or research paper?
Yes, long academic writing works fine, references and all. Just remember it checks the language, not the content: the facts, figures and sources are still yours to verify.

Also handy alongside Grammar Checker

Page last revised: September 22, 2026