What is Plagiarism Checker by Grammarly?

Grammarly's plagiarism checker is a powerful tool that detects plagiarism in your text and provides advanced feedback on writing mechanics. It compares your text to billions of web pages and academic papers, highlighting passages that require citations. The checker is part of a comprehensive writing app that offers grammar and spelling checks, as well as stylistic enhancements. Whether you're a student, teacher, or writer, Grammarly's plagiarism checker can help you create original and properly sourced content.

Key Features:

1. Plagiarism Checking: Grammarly's plagiarism checker scans your text for duplicate content from ProQuest databases and the web.

2. Citation Assistance: The premium version highlights passages that need citations and provides resources to properly credit sources.

3. Writing Enhancements: In addition to detecting plagiarism, Grammarly offers advanced feedback on grammar, spelling, word choice, conciseness, tone, and more.

4. Extensive Database: The tool compares your text against billions of web pages and academic papers stored in ProQuest's databases.

5. Instant Report: After running the check, you receive an instant report indicating if plagiarism was found along with the number of grammar issues present in your document.

6. Originality Score: Premium users receive an overall originality score for their document based on the level of uniqueness detected.

7. Privacy Protection: Your writing remains private; it will not be searchable publicly or accessible by other plagiarism checkers.

Use Cases:

- Students can use Grammarly's plagiarism checker to ensure their essays or research papers are free from unintentional copying before submitting them for grading.

- Teachers can save time by using this tool to efficiently scan multiple papers for potential instances of plagiarism while providing valuable feedback to students.

- Writers working on original content for websites can rely on this tool to maintain integrity by avoiding accidental duplication.

Grammarly’s online plagiarism checker is a trusted resource used by millions of students, educators,and professional writers. By combining plagiarism detection with comprehensive writing feedback, Grammarly helps users produce original and well-sourced work. Whether you're a student striving for academic integrity or a writer aiming to create unique content, Grammarly's plagiarism checker is an essential tool that saves time and ensures high-quality writing results.

More information on Plagiarism Checker by Grammarly

Launched

2009-07

Pricing Model

Free Trial

Starting Price

Global Rank

833

Month Visit

52.4M

Tech used

Amazon AWS CloudFront,CookieLaw,Google Analytics,Google Sign-in,HSTS,Linkedin Insight Tag,Next.js,OneTrust,Webpack

Top 5 Countries

45.5%

7.53%

6.4%

5.51%

3.92%

United States India Philippines United Kingdom Canada

Traffic Sources

1.41%

1.29%

0.21%

5.9%

39.26%

51.93%

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Source: Similarweb (Sep 24, 2025)

Plagiarism Checker by Grammarly was manually vetted by our editorial team and was first featured on 2023-10-03.