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A Checker for Every Sentence
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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1. Step 1: Add your text, and Grammarly will underline any issues.
2. Step 2: Hover over the underlines to see suggestions.
3. Step 3: Click a suggestion to accept it.
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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.
Get More Writing Tips
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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Frequently Asked Questions
How does Grammarly’s sentence checker work?
Where can I use Grammarly’s sentence checker?
What are run-on sentences, and how can I avoid them?
What are sentence fragments, and how can I improve them?
How can I strengthen my sentence structure?
What other writing feedback does Grammarly offer?
Great Writing Made Simple
Join over 30 million people who use Grammarly to improve their writing
every day.
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Watch and Learn
Learn more about the differences between the passive and active voice.
Passive voice
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