Fix Sentence Structure Errors
Catch run-on sentences, fragments, and parallelism issues. Our AI sentence checker ensures every sentence is grammatically correct and well-structured.
Fix Sentence Structure Errors in 3 Steps
Catch run-on sentences, fragments, and parallelism issues. Our AI sentence checker ensures every sentence is grammatically correct and well-structured.
Paste Your Sentences
Copy sentences you want to check into the editor. Works with any writing style.
Click Check Grammar
Our AI analyzes sentence structure, identifies errors, and generates corrected versions.
Get Fixed Sentences
Receive well-structured sentences that flow naturally and pass AI detection.
Features
Everything you need for sentence grammar checker
Run-on Detection
Identifies run-on sentences and fixes them by adding proper punctuation or splitting into separate sentences.
Fragment Fixing
Detects sentence fragments and completes them into proper, full sentences.
Parallelism Check
Ensures parallel structure in lists, comparisons, and compound sentences.
Subject-Verb Agreement
Catches mismatched subjects and verbs, even in complex sentences with multiple clauses.
Modifier Placement
Fixes dangling and misplaced modifiers that can change sentence meaning.
Sentence Variety
Suggests improvements when too many sentences start the same way or have identical structure.
Frequently Asked Questions
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AI Grammar Checker
Our full-featured AI grammar checker with multiple modes and humanization.
Try it freeFree Grammar Checker
Try our free online grammar checker with 300 words free. No sign-up required.
Try it freePunctuation Checker
Fix commas, periods, semicolons, and all punctuation errors.
Try it freeSpell Checker
Catch and fix spelling mistakes, typos, and commonly confused words.
Try it freeGrammar Checker for Essays
Fix grammar errors specifically in essay writing.
Try it freeReviews
What our users say
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