/ Is Grammarly Plagiarism Checker Good?

Is Grammarly Plagiarism Checker Good?

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Manish Jindal

March 12, 2024


0min read

Is Grammarly Plagiarism Checker Good?

Key Takeaways:

  • Checks for plagiarism: Compares text to a vast database of online and academic sources to identify copied content.
  • Easy to use: One-click check with detailed reports on potential plagiarism and grammar errors.
  • Accurate: Identifies both direct matches and paraphrased content, but may have false positives.
  • Limitations: Struggles with non-public content and might be expensive for some users.
  • Safe and reliable: Prioritises user privacy and adheres to ethical and legal standards.

In the world of academia and professional writing, plagiarism is a serious offense that can have major consequences. As a result, many students and writers turn to plagiarism checkers to ensure their work is original.

Grammarly is a popular tool that not only checks for grammar and spelling errors but also has a plagiarism checker feature. But is Grammarly’s plagiarism checker reliable?

This article on “Is Grammarly Plagiarism Checker Good?” gives you a useful insight into the core topic along with other relevant information.

What is the Grammarly Plagiarism Checker?

Grammarly, a widely used writing assistant tool, offers a suite of features designed to enhance writing proficiency.

Among its arsenal of tools is the plagiarism checker, a feature tailored to identify instances of plagiarism within written content.

By leveraging advanced algorithms and databases, Grammarly scans text against a vast repository of web pages and academic journals to ascertain originality.

How Does the Algorithm of Grammarly Plagiarism Checker Operates?

As soon as you initiate a plagiarism check within Grammarly by pressing the Plagiarism button, the system springs into action.

It scrutinises your submitted text against an extensive collection of online resources, including billions of web pages, alongside a wide array of magazines and scholarly articles housed within different ProQuest databases.

Should it find any content that matches or closely resembles your text, Grammarly promptly notifies you with a plagiarism warning.

This warning does more than just highlight the text in question; it also identifies any sections that might require citations. Additionally, it provides you with detailed information about the original source of the quoted text or data, ensuring you have all the necessary details to address the issue.

Is Grammarly Plagiarism Checker Good?

Grammarly’s plagiarism checker is a useful tool for those looking to ensure that their writing is original and free of any potential issues with plagiarism.

This online tool scans through your text and compares it to a vast database of online content to detect if any parts of your work have been copied from elsewhere.

One of the benefits of using Grammarly’s plagiarism checker is its ease of use. With just a few clicks, you can initiate a plagiarism check and receive prompt feedback on the originality of your work.

The detailed plagiarism warning provided by Grammarly helps users understand where potential issues lie and how to rectify them through proper citation.

Additionally, Grammarly’s plagiarism checker is known for its accuracy. With its extensive database and advanced algorithms, it can pinpoint even subtle instances of plagiarism, helping users avoid unintentional infringement.

Moreover, Grammarly’s plagiarism checker is also known for its comprehensive coverage. It not only scans through online sources but also checks against academic databases, providing users with a thorough analysis of their work’s originality.

However, like any tool, Grammarly’s plagiarism checker has its limitations.

While it is effective in detecting verbatim instances of plagiarism, it may struggle with identifying more subtle forms of plagiarism, such as paraphrasing or rephrasing. Additionally, Grammarly’s plagiarism checker is not foolproof and may occasionally miss instances of plagiarism.

In short, Grammarly’s plagiarism checker is a valuable tool for writers looking to maintain originality in their work.

Its ease of use, accuracy, and comprehensive coverage make it a reliable option for detecting potential issues with plagiarism. However, it is important to remember that no plagiarism checker is perfect, and it is always advisable to review your work thoroughly to ensure its originality.

Ultimately, Grammarly’s plagiarism checker can be a helpful tool in your writing arsenal, but it should not be relied upon as the sole means of detecting plagiarism.

How Accurate is Grammarly Plagiarism Checker?

Grammarly’s plagiarism checker prides itself on delivering high accuracy levels in detecting instances of plagiarism.

Through its robust algorithm and comprehensive database, Grammarly can identify similarities even in paraphrased content. However, it’s essential to exercise discretion and verify flagged instances manually to ensure accuracy, as automated systems may occasionally yield false positives.

Merits and Demerits of Grammarly’s Plagiarism Checker

As with any tool, Grammarly’s plagiarism checker boasts its share of advantages and drawbacks. Let’s explore these aspects in detail:


  • Highly Accurate: Grammarly’s accuracy stems from its extensive database. It scans your content across billions of websites and articles, identifying instances of copied material. Additionally, if you have Grammarly Premium, you can enhance your grammar, sentence structure, and readability while checking for plagiarism.
  • Unlimited Checks: Grammarly allows unlimited plagiarism checks for users with premium features. This feature is beneficial for academic writers, content creators, and students who frequently need to cite sources or maintain the originality of their work. Unlike some other tools, Grammarly doesn’t impose daily limits or require separate transactions for plagiarism checks.
  • Document Import and Export: You can upload various file formats (such as.docx,.odt,.rtf, and.txt) to scan for plagiarism. Even if you have a PDF document, you can copy and paste the content into Grammarly. After checking, you can download your work as a.docx file or print it directly from the application.


  • Expensive: Grammarly’s plagiarism checker is part of the Premium package, which starts at $30 per month (or $12 per month with the annual plan). While the comprehensive features and unlimited checks make it attractive, the cost may be a consideration for some users.
  • Not Reliable for Edited or Paraphrased Texts: While Grammarly excels at detecting direct matches, it may not be as reliable for identifying heavily edited or paraphrased content.

What is the acceptable plagiarism percentage in grammar?

There isn’t a universally agreed-upon or research-supported threshold for an acceptable plagiarism percentage within Grammarly’s checks. The tool’s detection mechanism is not infallible, often flagging false positives.

However, a common benchmark among numerous educational institutions, including colleges, schools, and universities, is a tolerance limit of 15%. These institutions generally consider a similarity index of 25% to be excessively high, potentially leading to disciplinary action.


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The effectiveness of the Grammarly plagiarism detection tool is optimal when it scans documents against content that is publicly accessible online, such as articles, blog posts, news stories, and web pages—essentially, material that anyone can easily find and read.

However, its capability to detect plagiarism diminishes when the original content is not freely available, such as academic papers, PDFs, or research documents hidden behind paywalls. Consequently, the Grammarly Plagiarism Checker might not be the best fit for academic purposes.

Academics might find more value in specialised academic plagiarism detection services like Turnitin or Scribbr if Turnitin is not an option.

Maximising Originality: A Guide to Using Grammarly’s Plagiarism Checker

To use the Grammarly plagiarism detector effectively, you need to click on the plagiarism button located at the top right corner of the interface.

This action prompts the tool to begin scanning your document, comparing it against various sources to identify similarities, and then it displays the percentage of your content that matches other materials.

Incorporating the Grammarly Plagiarism Checker towards the end of your writing process is advisable. Doing so aids in pinpointing unintentional plagiarism and highlighting sections that may require proper citations to enhance the integrity of your work.

Enhancing the accuracy of plagiarism detection can be achieved by broadening the diversity of your sources.

For optimal use and access to the plagiarism checker feature, upgrading to Grammarly’s pro version is recommended. Creating a Grammarly account and installing its browser extension can further improve your experience with the tool.

Grammarly allows you to either type directly into its editor or paste your text. Following this, it generates a detailed plagiarism report. This report not only identifies text that matches external sources but also offers recommendations to increase the originality of your writing.

Assessing the Reliability and Safety of Grammarly’s Plagiarism Checker

Yes, Grammarly’s plagiarism tool is both reliable and safe for users. It is designed to offer accurate plagiarism detection by comparing texts against a vast database of web pages and academic content.

The tool is known for its sophisticated algorithms that help identify not only direct matches but also paraphrased content, making it a reliable resource for ensuring the originality of written work.

In terms of safety, Grammarly takes user privacy and data security seriously. The documents checked for plagiarism are not stored or used by Grammarly for any other purposes without the user’s consent.

The company adheres to strict privacy policies to protect the information and content submitted by its users, ensuring that the use of its plagiarism checker does not compromise the security of personal or sensitive information.

However, as with any online plagiarism checker, users should review Grammarly’s terms of service and privacy policy to understand how their data is handled and to ensure it aligns with their personal or organisational privacy standards.


Grammarly’s plagiarism checker stands out as a powerful ally in maintaining the uniqueness and integrity of textual works.

Its sophisticated algorithm efficiently identifies grammar errors, accidental plagiarism, and duplicate content, ensuring writers avoid common writing issues and grammar mistakes.

This tool is particularly valuable for academic institutions and professionals aiming to preserve high ethical standards in writing while encouraging originality.

Although it may be considered costly, the benefits of error detection and unlimited usage justify the investment for both individuals and organisations.

For those seeking alternatives, Bytescare offers a plagiarism detector that serves as another reliable option for checking originality. For more information or to explore our services further, please feel free to contact us.


Are Grammarly’s plagiarism checker features considered reliable and secure?

Yes, Grammarly’s plagiarism checker is generally reliable and safe to use.

The platform prioritises user privacy and data security, employing encryption protocols and stringent measures to safeguard sensitive information.

Additionally, Grammarly adheres to strict ethical guidelines and legal standards, ensuring compliance with copyright laws and intellectual property regulations.

Does Grammarly’s plagiarism checker work?

Indeed, Grammarly’s plagiarism checker is highly effective in identifying instances of plagiarism within written content.

By leveraging sophisticated algorithms and an extensive database, Grammarly can detect similarities and provide actionable insights to help users maintain originality and integrity in their writing endeavors.

However, it’s essential to exercise discretion and verify flagged instances manually to mitigate the risk of false positives.

Is Grammarly plagiarism checker legit?

Yes, Grammarly’s plagiarism checker is legitimate and trusted by millions of users worldwide.

It scans texts against billions of web pages and ProQuest’s academic databases to detect plagiarism and duplicate content effectively.

Its legitimacy is underscored by its popularity among students, educators, and professionals who rely on it for maintaining the integrity and originality of their written work.

Who benefits from plagiarism detector?

A wide range of individuals and institutions benefits from plagiarism detectors, including students, educators, writers, publishers, and academic institutions.

Students use them to ensure their work is original before submission, educators to check students’ assignments for authenticity, writers and publishers to verify the originality of content before publication, and academic institutions to uphold academic integrity and prevent plagiarism.

Why should you use plagiarism checker?

Using a plagiarism checker is essential for ensuring the originality and integrity of your work.

It helps identify any unintentional plagiarism, allowing you to cite sources correctly and avoid potential legal and ethical issues.

Additionally, it enhances the quality of your writing by encouraging the creation of unique content, which is crucial in academic, professional, and publishing contexts.

What features does the Grammarly Plagiarism Checker offer?

The Grammarly Plagiarism Checker offers several key features, including the ability to scan texts against billions of web pages and ProQuest’s academic databases for plagiarism detection, a user-friendly interface, and detailed reports that highlight not only potential plagiarism but also grammar mistakes and writing issues.

It also provides a plagiarism score and specific feedback on how to improve the text, making it a comprehensive tool for writers aiming to enhance their work’s originality and quality.

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