Grammarly’s free sentence checker allows you to write your best wherever you love to write. Check for run-on sentences, tone, clarity, and more with Grammarly.
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Improve Your Sentences
Great sentences are the building blocks of great writing, but getting them just right is something that even professional writers regularly fuss over. There are many ways to muddy a sentence: complicated structure, misplaced modifiers, or confusing delivery. Two of the most common blunders involve incomplete or run-on sentences, which make writing difficult to understand. Luckily we have helpful resources to guide you toward writing crisper, cleaner, easy-to-read sentences so that your ideas don’t get lost in the shuffle.
Run-on Sentences
Recognize the traps of run-on sentences with this essential guide.
Topic Sentences
Typically the first and the most important sentence in a paragraph, topic sentences aren’t only used in an introduction.
Transition Sentences
Transition sentences are not optional! Bring the reader along with you every step of the way with these important idea connectors.
Sentence Structure
Sentences are like houses; they need foundations. Read all about sentence structure so you have a blueprint in your head when you write.
Sentence Starters
Introductions need sentences, but sometimes sentences need introductions too.
All About Sentences
Everything you need to know about sentences (in English, at least), so you can improve your writing and dazzle your reader.
Simple present tense
Watch and Learn
Learn more about the simple present tense, including how and when to use it.
How Grammarly Can Help
Grammarly
’
s full range of writing feedback is designed to help you make your writing the best it can be. With real-time suggestions on everything from spelling, grammar, and punctuation to tone and clarity, you can be confident that your writing presents your ideas in their best light.
Full-Sentence Rewrites
See clearer and more polished ways to say what you mean.
Punctuation and spelling fixes
Be confident that your punctuation and spelling are spot-on every time.
Tone Detection
Find out how your message is likely to sound to a reader.
Word Choice
Choose just the right word for the occasion.
Works Where You Write
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Chrome
Safari
Firefox
Edge
iOS
Android
Frequently Asked Questions
How does Grammarly’s sentence checker work?
Grammarly
’
s algorithms analyze your sentences in real time to generate suggestions on how to improve your writing.
Where can I use Grammarly’s sentence checker?
You can use the sentence checker on this page. Or you can download Grammarly to get AI-powered writing assistance on all of your sentences. Grammarly works in your browser, across all of your favorite desktop apps, and on your phone.
What are run-on sentences, and how can I avoid them?
The term "run-on sentence" can describe a couple of different things. To some people, a run-on sentence is simply a very long, hard-to-follow sentence. To others, a run-on sentence is a series of clauses lacking punctuation and conjunctions between them. In either case, you can fix the problem by breaking a run-on sentence into shorter complete sentences.
What are sentence fragments, and how can I improve them?
A complete sentence needs both a subject and a verb. When one of those is missing, you end up with a sentence fragment. It
’
s OK to use sentence fragments in casual writing (as long as you don't do it), but it's best to stick to complete sentences in more formal situations.
How can I strengthen my sentence structure?
One of the best ways to check your sentence structure is to read it out loud. If you get lost partway through or find yourself tripping over certain phrases, you can try rewriting your sentence or breaking it into simpler ones.
What other writing feedback does Grammarly offer?
Grammarly offers a full range of writing feedback, with real-time suggestions on clarity, vocabulary, tone, and more. Check your English text for grammar, spelling, and punctuation errors with Grammarly’s free grammar checker.
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