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Free Grammar Checker
  • Grammar & Spelling Check
  • Free Online Proofreading
  • Plagiarism Detection
  • No Downloads

Use Now FREE!

Proofread your writing with PaperRater’s free online grammar and plagiarism checkers

Requiring no downloads, the proofreader and plagiarism checker use AI to scan your essays and papers for any errors and assign them an automated score. This will help you correct any grammatical and spelling mistakes, address unintentional instances of plagiarism and earn a higher grade for your work.

Simply copy and paste your writing into the online editor or upload your file and click ‘Get Report’!

Grammar Check

Free Grammar Checker

Robust grammar checking allows you to find those pesky mistakes and correct them before turning in your paper.

Writing Suggestions

Writing Suggestions

Our proofreading system alerts you to opportunities to improve your writing.

Plagiarism Checking

Plagiarism Checker

Find out if your paper contains plagiarized text before your professor does. We compare your text to over 10 billion documents.

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Grammar Checkers LifeHack

Immediate Results

You want instant gratification and so do we. Using Artificial Intelligence and Data Science, submissions are analyzed in real-time with results typically appearing 5-15 seconds after submission. PaperRater’s cloud-based software digs deep into the syntax and structure of your text without the need to sign up, login, or download. You won't find another tool offering plagiarism checking, automated proofreading, grammar check, and automated scoring that can analyze your text this quickly.





Use Now FREE!


Grammar Feedback

Is Feedback Missing From Your Feedback Loop?

The best time to receive feedback is before you turn your assignment in. Sometimes valuable feedback comes too late, which is why our automated proofreading tool can be especially helpful -- not just for detecting grammar, punctuation, and spelling errors, but also for giving helpful tips that make you a better writer. Our AI engine, Grendel, works tirelessly providing feedback that you can incorporate into your text before you pass it on for a final grade from a human.




Free and Accessible Checker

Accessible

We use this word a lot to describe our service. It's fast, free, requires no downloads or signups, and offers state-of-the-art results. Maybe this is why our grammar check tool is used by thousands of students every day in over 140 countries. If you haven't put our service to the test, give it a try now and see what all the buzz is about.




Use Now FREE!