Etoolio

AI Grammar Checker

Free AI grammar checker. Fix grammar, spelling and punctuation mistakes in your text while keeping your meaning and tone, in American or British English.

0 / 15,000
English

Corrections are generated by an AI model through OpenRouter, so your text is sent to that third-party service to be processed. Do not paste confidential information.

Catch the mistakes you miss

An AI grammar checker reads your text and fixes the grammar, spelling and punctuation errors that are easy to overlook in your own writing. Unlike a rewriter, it leaves your wording and style alone and only corrects what is actually wrong.

What it fixes

  • Grammar: verb agreement, tense, articles and sentence structure.
  • Spelling: typos and misspelt words, in American or British spelling.
  • Punctuation: commas, apostrophes, capitalisation and spacing.

How to use it

  • Paste your text into the box, up to about 15,000 characters.
  • Choose American or British English so spellings are corrected the right way.
  • Press Check grammar and copy the corrected version.

Good to know

  • It corrects rather than rewrites: if you want fresh phrasing, use the AI Paraphrasing Tool.
  • Always reread the result, especially for names, numbers and anything technical.
  • Your text is sent to a third-party AI service to be checked, so avoid confidential content. It runs on a free model, so you may occasionally need to retry at busy times.

Good to know

AI Grammar Checker, frequently asked questions

How does the AI grammar checker work?

Paste your text and press Check grammar. Etoolio sends it to a large language model that fixes grammar, spelling and punctuation while preserving your meaning and tone, then returns the corrected text.

Is the grammar checker free?

Yes, it is free with no signup. It runs on a free AI model, so at busy times you may occasionally need to wait a moment and try again.

Does it rewrite my text or just fix errors?

It only corrects grammar, spelling and punctuation, it does not rephrase or change your style. If you want a full rewrite, use the AI Paraphrasing Tool instead.

Can it use British and American English?

Yes, choose American or British English before you check, and spellings like color/colour are corrected accordingly.

Is my text private?

This tool sends your text to a third-party AI service (through OpenRouter) to check it. It is not stored by Etoolio, but avoid pasting confidential information.