The plagiarism checker is turned off by default. To check your document for plagiarism against an index of publicly accessible websites and major proprietary databases, open or create a document in the Grammarly Editor and click the Plagiarism button in the lower-right corner:
If you’re using Grammarly for Microsoft Office on Windows, go to the Grammarly tab in Word and click Plagiarism:
If you’d like to check your text for plagiarism in Grammarly for Microsoft Word on Mac, open Grammarly’s sidebar and click Plagiarism in the lower-right corner:
Note: The plagiarism check is not available in the Grammarly browser extension or on mobile devices at this time.