Free Online Plagiarism Checkers
Never rely solely on a plagiarism checker to prevent plagiarism!
Use plagiarism checking applications as a last line of defense against accidental plagiarism. Even the most honest students make mistakes.

Grammarly’s plagiarism checker can detect plagiarism from billions of web pages as well as from ProQuest’s academic databases. Their free plagiarism check will tell you whether or not your text contains duplicate content. Their paid plagiarism check highlights passages that require citations and gives you the resources you need to properly credit your sources. This plagiarism checker may not be as accurate at detecting patchwork plagiarism.
PaperRater

PaperRater.com is a FREE resource that utilizes Artificial Intelligence to detect plagiarism.
At no cost, PaperRater allows you to:
- Check papers up to 5 pages long
- 10 plagiarism checks per month