Free Grammar Checker


Free Grammar Checker is trusted by millions of people. As you type, the Free Grammar Checker checks your text against more than 250 advanced grammar rules. The checks include common grammatical errors, such as subject-verb agreement, article use, and modifier placement, in addition to contextual spelling mistakes, phonetic spelling mistakes, and irregular verb conjugations. Plus, it’s spell check takes the context of your sentence into account.

The Checker checks for spelling mistakes, grammatical mistakes, vocabulary issues, and plagiarism while you type. You’ll receive suggested corrections, which offer straightforward explanations of your mistakes. Each time you make a correction, you’ll also learn how to avoid making the same mistake in the future. You’ll see your writing improve dramatically with the Free Grammar Checker as your own personal editor and grammar coach.


  • 150 critical grammar and spelling checks
  • 100+ additional advanced grammar and spelling checks
  • Vocabulary enhancement suggestions
  • Genre-specific writing style checks
  • Plagiarism detector that checks more than 8 billion web pages


  • Check your writing across the web
  • Access your personal editor via
  • Access your documents on multiple devices
  • Integrate with Microsoft Office (Windows only)
  • Use native desktop apps (Windows and OS X)
  • See definitions and synonyms via double clicks
  • Catch contextual spelling and grammar mistakes
  • Add words to your personal dictionary
  • See explanations of grammar rules

  • Get performance stats via email

It’s Easy to Use:

Install the free browser extension and it will help you write correctly on nearly every site on the web.

Copy and paste (or upload) any text into your personal editor after creating your account to begin correcting mistakes. Or, simply create a new document and begin writing. It will store all of your documents for you.

Download Free Grammar Checker for Microsoft Office.

It is trusted by students, professional writers, business people, bloggers, and people who just want to write better. No matter what your writing situation is, the Free Grammar Checker adapts to your needs, giving you the confidence of mistake-free writing every time you write.