Best Grammar & Plagiarism Checker

Grammarly’s grammar and plagiarism checker scans your text for plagiarized content and grammatical errors. It catches up to 10 times more mistakes than word processing software, and it makes creating citations a snap.

  • Plagiarism detector

    Detect plagiarism by checking your text against over 8 billion web pages
  • Context-optimized vocabulary suggestions

    Save time by automatically generating citations in MLA, APA, and Chicago styles
  • Instant proofreading

    Instantly find and fix plagiarism and grammatical mistakes

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Checking for: Preposition use at the end of sentences

For years I have been driving an old used car with a lot of mileage and I hate it. It gets me where I need to go, but I’m tired of fixing leaks and broken parts all the time. Its annoying every times I need to take it to the mechanic. Even when they take care of everything, I know I’ll just end up going back there in a few weeks. I have finally decided that I am not going to do it anymore. I have decided to buy a new car! Unfortunately, I have a problem. I have no idea what car to get. Do I want something fast? Do I want something big? Do I want something stylish? Something economical? I have so many choices that I don’t even know where to begin. I am not sure if I will be able to make the decision on my own. I don't have not a lot of money, either, so I probably don't have many options. After I did some research, I knew that I would need some expert advice. Eventually, I went to a local dealership to check out some new models. I talked to the saleswoman and listened at she carefully. Her honesty and professionalism were really impressive. She had a lot of vary helpful suggestions and showed myself some safe affordable choices. After a long discussion I finally decided which one I wanted. She not only helped me with the paperwork and finished the sale, but also the insurance. I was expecting this purchase to be a serious hassle, but the experience was almost painless. Everything went smoothly, and now I have a brand new car! I was so excited when I pulled out of the lot that the first thing I did was change lanes right in front of other car. “That wasn't very nice,” I thought to myself. I needed to relax. I didn’t realize what a serious mistake I had made however. I hadn’t just cut off any other car, I had cut off a police car! It took a few seconds to realize what was happening when I saw the flashing lights in my rearview mirror. By the time I had managed to pull over, my heart was racing. I gathered all the paperwork as he approached my window. “You forgot to signal back there” said Officer Johnson, according to his nametag. “Yes, well, it’s a new car so I guess I was a bit unfamiliar with the controls,” I stammered. He looked at me skeptically. “I’m pretty sure the controls for the turn signal are in the same place on every car.” What could I say? He was right. “I’m sorry,” I ventured. He looked over my paperwork and noticed that the car was new. “It would be unfortunate to get a ticket on your first day in a new vehicle,” he said, smiling. “Try not to cut in front of anyone on your way home.” I had never felt so relieved in my life. “Thank you, officer!” As he made his way back to his car I let out a huge sigh. I took a few seconds to compose myself before shifting into gear and driving away from the side of the rode. Now I have a brand new car and a story to tell!
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Plagiarism Checking

Grammarly catches plagiarism—before you get caught!

With online resources making it easier than ever to copy and paste text, plagiarism is on the rise in educational institutions. From middle school teachers to college professors, educators are cracking down on plagiarized text. Turning in papers with plagiarized content can result in failing grades and even expulsion, even if the mistake was unintentional.

Grammarly’s grammar and plagiarism checker crosschecks your text against our huge database of web pages, detecting plagiarized passages before they get you into trouble. By comparing your work to billions of web pages, Grammarly’s software highlights the sections that have been previously published elsewhere. You can then fix the issue by either deleting the plagiarized text, paraphrasing it, or citing it as a quotation. Not sure how to cite your sources? Don’t worry; Grammarly’s grammar and plagiarism checker has you covered.


Citations allow you to give credit to your sources. These references are typically listed at the end of a paper, and the formatting can be more than a little tricky. Grammarly’s grammar and plagiarism checker can help you generate citations in the three most popular styles: MLA, APA, or Chicago.

MLA style, defined by the Modern Language Association, is most commonly used for humanities papers. APA, or American Psychological Association, is the standard for the sciences. The Chicago Manual of style is often used in general academic writing. Confused yet? Grammarly does it for you, saving you time, effort, and frustration.

As part of our innovative plagiarism checking feature, Grammarly’s grammar and plagiarism checker not only discovers plagiarized content, but also pinpoints the origin of the text and offers a citation to acknowledge the original source.

Writing Score

Some of the most exciting and innovative features of Grammarly’s grammar and plagiarism checker are the writing score and report. Every time you check text, Grammarly generates a writing score based on the number of errors—everything from common spelling mistakes to sophisticated usage issues—found in the document. The scores are based on a 100-point scale, giving you a “grade” each time you use Grammarly and allowing you to get an easy-to-understand snapshot of the current state of your writing.

For a more in-depth look at your score, the printable report breaks down the errors into five categories: Plagiarism, Contextual Spelling Check, Grammar, Punctuation, and Style and Word Choice. Categories containing errors are highlighted in red, making it easy for you understand at a glance where your strengths and weaknesses lie.

Context Optimized Synonyms

Having trouble thinking of the perfect word? Stuck using the same terms over and over again? Grammarly’s synonym suggestions can take your writing from dull to dynamic in a few clicks.

Adaptive Spell Checker

Grammarly’s grammar and plagiarism checker spots mistakes other spell checking software misses. The adaptive spell checker not only corrects commonly confused words such as lose/loose, but also finds and fixes words that are spelled right but used in the wrong context.

Correct Your Text for
Over 250 Points of Grammar

In less than a minute, Grammarly’s grammar and plagiarism checker scans your text for plagiarism, grammatical mistakes, and spelling errors, offering solutions and in-depth explanations to help improve your writing.

Renee Hendricks Freelance Writer
Washington, USA

“Grammarly - highly recommended, includes free plagiarism checking, help w/essay editing & English writing.”

Cassandra Lewis Blogger
United Kingdom

“A great piece of software for aspiring writers — correct errors in your written work with Grammarly!”

Liz Ifeoma Akano
Ontario, Canada

“That is an awesome tool. I will start using it in second semester and will be more than glad to share it with my colleagues.”

Grammarly on the Go!

A new web-based version of Grammarly is available from any browser—no download required. Grammarly also integrates seamlessly with Microsoft® Office applications, meaning that you’ll never miss another typo again.

Improved Skills

When you make an error in spelling, grammar, or punctuation, Grammarly doesn’t just fix it. Instead, you’ll be shown an explanation of the rule with examples to help you understand it. Grammarly also keeps track of your most common mistakes on your Dashboard, allowing you to keep tabs on your progress as a writer.

Instant Results

Tired of asking your English major buddy for help? Need a document fixed fast and don’t have time to find someone to read over it? Grammarly’s grammar and plagiarism checker proofreads your text in seconds!

Awesome Support

At Grammarly, we’re all word nerds at heart. We love talking to our users about their experiences, so please don’t hesitate to contact us. Our support representatives are available 24/7.

Grammarly isn’t just an automated proofreader—it’s a personal grammar coach,
plagiarism watchdog, and writing tutor, too! Grammarly’s grammar
and plagiarism checker explains errors in your text with examples,
helping you become a better writer.

Check For Plagiarism Now!

Plagiarism Checker

In the digital age, it's easier than ever to "borrow" content from online and pass it off as your own. Plagiarism--using another person's words without giving credit—is serious business. Plagiarism devalues the hard work of others and makes your own writing weak—not to mention the consequences that may befall you if you’re caught plagiarizing in academic or business settings. While most plagiarism checkers only identify borrowed text, Grammarly goes a step farther by offering ways

to correct the problem. Grammarly's super-charged grammar and plagiarism checker scans your text and checks it against a database containing billions of web pages. If it detects copy that's been published elsewhere, it automatically generates references in the three most popular formats: MLA, APA, and Chicago. This feature helps you avoid unintentional plagiarism and offers an easy, simple solution for discussing other writers' ideas while giving them credit for their work.

Writing something more casual than a term paper? Grammarly’s plagiarism checking feature can be turned on and off according to your writing needs. The software is incredibly versatile and can be adapted to informal, personal, creative, or business use in addition to academic writing.

Grammarly’s grammar and plagiarism checker helps you find borrowed text before it gets you into trouble, and it allows you to fix copied or improperly cited content with the click of the mouse. It’s that easy!