AI Grammar Checker

Fix grammar, spelling and punctuation in English, Spanish, French or German text and see each change.

  • Free
  • No sign-up
  • Instant results

Free: 3 AI uses per day, up to 1,000 words each. AI can make mistakes, so check the result.

Your text is sent to Cloudflare Workers AI to create the result. Do not include personal or confidential information.

Result

Your result will appear here.

How to use AI Grammar Checker

  1. Paste your textPaste up to 1,000 words in English, Spanish, French or German.
  2. Check itPress Check grammar to get a corrected version and a list of every change.
  3. Review the changesRead the list of changes, then copy the corrected text.

Common uses

  • Proofread an email before you send it.
  • Fix mistakes in an essay, cover letter or blog post.
  • Check text written in a language you are still learning.

Frequently asked questions

How do I use AI Grammar Checker?

1. Paste your text: Paste up to 1,000 words in English, Spanish, French or German. 2. Check it: Press Check grammar to get a corrected version and a list of every change. 3. Review the changes: Read the list of changes, then copy the corrected text.

Will it change my writing style?

No. It is told to fix spelling, grammar and punctuation only and to keep your wording, tone and regional spelling, such as British or American English.

Is it as good as a human proofreader?

It catches most everyday mistakes, but it can miss errors or suggest a change you do not need. Read the list of changes before you use the text.

Which languages does it support?

It works with English, Spanish, French and German and usually with other major languages too. The result is written in the language of your text.

How often can I use it for free?

Every visitor gets 3 free AI uses per day, shared by all GigaTools AI tools, with up to 1,000 words per request. Running the exact same request again does not use up another one.

What happens to my text?

It is sent to Cloudflare Workers AI, which runs the AI model that writes the result. GigaTools keeps no history linked to you; a result may be cached for up to 24 hours so an identical request is answered without a new AI run. Do not paste personal or confidential information.