Best Plagiarism Checker & Proofreader

Grammarly is an automated proofreader and plagiarism checker.
It makes sure everything you type is easy to read, effective, and mistake-free.

Detect plagiarism from 16 billion web pages and ProQuest's databases.
Instantly find and correct over 400 types
of grammatical mistakes.
Check your text
Please drag & drop a text file or copy & paste at  least a paragraph of text in the area above to start the check or use sample text
Improve word choice
with context-optimized vocabulary suggestions.
Compatible with
Word™ & Outlook®.
Trusted by students
and faculty at

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.
Writing Improvement Review - Lilian
Writer, Toronto, Canada
Grammarly out-performed Word’s grammar and spell-checker by far.
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