What is an AI grammar checker?

An AI grammar checker uses artificial intelligence to analyze your text and fix grammar, spelling, punctuation, and style errors. It provides instant corrections and suggestions to improve your writing.

Is GrammarPro free to use?

Yes! GrammarPro offers 3 free grammar checks per day (5 with a free account) for texts up to 500 words. Upgrade to Pro for unlimited grammar checks and 5,000 word limit.

What types of errors does it catch?

GrammarPro catches grammar errors, spelling mistakes, punctuation issues, clarity problems, and more. Our 6 modes cover: Grammar, Spelling, Punctuation, Clarity, Formal Tone, and Concise Writing.

How accurate is the AI grammar checker?

Our grammar checker uses advanced AI (GPT-4o-mini) to provide highly accurate corrections. It understands context, catches subtle errors, and preserves your original meaning and voice.

Does it work with languages other than English?

Yes! GrammarPro supports multiple languages including Spanish, French, German, Chinese, Japanese, and Portuguese. Check our language-specific pages for details.

Is my text stored or shared?

No. We do not store the text you submit for checking after processing is complete. Your text is sent to our AI for analysis and immediately discarded.

Free AI Grammar Checker

Check and fix grammar, spelling, and punctuation instantly. Powered by AI with 6 different checking modes.

0/3 free uses today · 500 word limit

Sign in for more

Text to Check

0 words · 0 characters0/500 words

Corrected Text

Corrected text will appear here...

How It Works

1

Paste Text

Paste or type your text into the editor. Up to 500 words free, 5,000 with Pro.

2

Choose Check Type

Select from 6 checking modes: Grammar, Spelling, Punctuation, Clarity, Formal, or Concise.

3

Get Corrected Text

Click Check Grammar and get your corrected text instantly with all errors fixed.

Features

6 Check Modes

Grammar, Spelling, Punctuation, Clarity, Formal, and Concise — cover every aspect of your writing.

Real-Time Corrections

Watch your text get corrected word by word in real-time with streaming output.

AI-Powered Accuracy

Powered by advanced AI that understands context and catches subtle errors other tools miss.

Free & No Signup

Use our grammar checker immediately. No account or credit card needed.

Spelling & Punctuation

Dedicated modes for spelling corrections and punctuation fixes beyond basic grammar.

Clarity Improvements

Go beyond error fixing — improve readability, formality, and conciseness.