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Your writing, at its best.

Grammarly makes sure everything you type is easy to read, effective, and mistake-free.
Instantly find and correct over 400 types of grammatical mistakes.
Detect plagiarism from 16 billion web pages and ProQuest's databases.
Improve word choice with context-optimized vocabulary suggestions.
Compatible with Word™ & Outlook®.

Grammarly is the world’s most accurate grammar checker.

Powerful grammar checking

Grammarly scans your text for proper use of more than 400 advanced grammar rules, spanning everything from subject-verb agreement to article use to modifier placement.

Contextual spelling checker

Correctly spelled words used in the wrong context mean embarrassing mistakes for you. Grammarly spots erroneous use of lose/loose, affect/effect, lie/lay, there/their/they’re, and many other commonly confused words.

Vocabulary enhancement

Words can make an impact, or they can fall flat. Enhance your sentences with Grammarly’s context-optimized word choice suggestions to instantly improve the readability of your document.

Over 4 million people already use Grammarly to proofread their writing online.

Whether your writing is read by thousands of people online, or simply by close family and friends, checking your grammar is important. Business professionals, bloggers, students, and even professional writers use Grammarly to proofread their writing, so why shouldn't you?