Free Run on Sentence Checker!
SentenceCheckup eliminates sentence structure issues, run-on sentences, and sentence fragments. Make your writing error-free today!
Free Run-on Sentence Checker
Check and correct run-on sentences in your blog posts, academic papers, and essays.
Tired of grappling with those never-ending sentences that wreck your writing flow and leave your readers confused? We get it. Sentence Checkup’s run-on sentence checker will help you make complex sentences clearer and easy to read.
Refine and Correct Your Sentence
Write with More Confidence
Don’t just take our word for it. Over 20,000 students, writers, and professionals like you have improved their writing with our Run-On Sentence Checker.
How Sentence Checkup’s Sentence Checker Works
This sentence checking tool uses advanced AI to check for punctuation, grammar, and spelling errors and improve your sentences. You can check run-on sentences in just three steps: