Plagiarism Checker

Ensure every word is your own with Grammarly’s AI-powered plagiarism checker, which uses advanced AI to detect plagiarism in your text and check for other writing issues.

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Plagiarism Checker results

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Go beyond with Grammarly.

Make the grade with our AI plagiarism checker

Your ideas are unique, and your writing should reflect that. Grammarly’s AI-powered plagiarism detector makes it easy to express your thoughts in a way that’s clear, original, and full of academic integrity.

Instantly find plagiarism by pasting or uploading your research paper, essay, or article.

Quickly ensure integrity by checking your work against billions of web pages with one click.

Get an originality score for your document to see how unique your ideas are.

Speed up work with recommendations on what and how to cite, as well as real-time feedback on your writing.

Beyond plagiarism detection: Speed up your work

Go beyond plagiarism detection to make your writing shine. From final papers to internship applications, Grammarly’s AI writing assistance improves your writing and teaches you how to use generative AI responsibly so you’re a step ahead at school and when entering the workforce.

Know your work is one-of-a-kind

Grammarly helps you check your content for potential plagiarism and AI use so you can rest assured that what you're submitting is your original work.

Bring transparency to your work

Using a variety of text sources in your content? Grammarly Authorship automatically categorizes your text based on where it came from (generative AI, an online database, typed by you, etc.) so that you can easily show your work and confidently submit your most original writing.

Ensure your citations are accurate

Catch stray periods, misplaced parenthesis, and other formatting issues in your style of choice—APA, MLA, or Chicago.

Easily improve your writing

Clean up typos, grammatical mistakes, and misplaced punctuation in just a few clicks.

Accurately, effortlessly disclose AI use

Maintain academic integrity with suggestions about when and how to acknowledge generative AI use.

94% of students say Grammarly Pro helped improve their grades.

“I absolutely love Grammarly when writing. I especially love revising even the most mundane of lines that hit a plagiarism result, because seeing 0% plagiarism is what I live for.”

Frequently asked questions

What is plagiarism?

Using someone else’s text without attribution is plagiarism, whether you mean to do it or not. In fact, a writer can even commit plagiarism by using their own work without proper citation.

What are the different types of plagiarism?

You might be surprised to learn there are eight types of plagiarism:

  1. Complete plagiarism is when you present someone else’s work as your own.
  2. Direct plagiarism is copying sections of another’s work without crediting the author.
  3. Paraphrasing plagiarism is rewording someone else's work without credit.
  4. Self-plagiarism is reusing your own previous work in a new context.
  5. Patchwork plagiarism involves integrating plagiarized material with your own work.
  6. Source-based plagiarism consists of misleading citations.
  7. Accidental plagiarism occurs when the author unintentionally plagiarizes content.
  8. AI plagiarism is using writing created with generative AI without disclosing its origin.

How can I avoid plagiarism in my written work?

Understanding the various forms of plagiarism is the first step in preventing it. Next, it’s critical to cite your sources and credit the original author or generative AI when using work or an idea that isn’t your own.

How do you check for plagiarism in written work?

To be 100 percent confident when submitting your work, find the best plagiarism checker for your needs and incorporate it into your writing and editing process to check for plagiarism quickly and easily.

How can I accurately cite my sources?

It’s always an excellent idea to learn citation fundamentals and familiarize yourself with your style guide’s correct citation format, whether that’s APA, MLA, or Chicago.

How does Grammarly’s plagiarism checker work?

Grammarly’s AI-powered plagiarism checker works by analyzing your text and cross-referencing it against a vast database.

Is plagiarism detection the same as AI detection?

Plagiarism detection and AI detection are not the same. Plagiarism detection compares a piece of writing to published works to identify similarities.

Does Grammarly offer other free AI writing tools?

Yes! Grammarly provides a range of AI-powered writing tools, including Grammar Checker, Plagiarism Checker, Cover Letter Generator, and AI Content Detector.