Punctuation Checker
Fix Commas, Apostrophes, and Semicolons
Paste any text — every punctuation error is spotted and corrected. Comma splices, missing apostrophes, wrong semicolons.
Punctuation Rules
Catches the errors spellcheck misses — commas, semicolons, apostrophes
Most spellcheckers skip punctuation. This tool catches comma splices, missing Oxford commas, its/it's confusion, unmatched quotation marks, and semicolons used where a comma belongs.
See the difference
Wrong punctuation in, clean text out — every fix highlighted.
How to check punctuation
Paste your text — email, essay, or any writing where punctuation matters.
The checker finds missing commas, wrong apostrophes, comma splices, and semicolon misuse.
Copy the fixed text or open the full grammar tool to catch spelling and syntax too.
This tool handles
- Apostrophes in contractions (it’s, don’t) and possessives (the team’s, employees’)
- Semicolons joining related independent clauses without a conjunction
- Quotation marks — pairing, nesting single inside double, and curly vs straight
- Hyphens vs en-dashes vs em-dashes — context-aware suggestions
- Colon usage to introduce lists, explanations, and quotations
- Comma splices and run-on sentences flagged with a punctuation fix
Not in scope
- Opinionated style guides (AP vs Chicago vs MLA differences)
- Dialogue formatting beyond standard quote pairing
- Punctuation for non-Latin scripts (CJK, Arabic, Devanagari)
- ASCII-art tables, code samples, and structural Markdown punctuation
Punctuation is the part of grammar where small marks change meaning. The deep-dive below covers each mark, the rules that matter, and the cases where humans still beat the checker.
Frequently asked questions
What punctuation errors does it catch?
Missing commas (including Oxford commas), comma splices, wrong apostrophes (its/it's, plural possessives), missing or misplaced semicolons, and incorrect quotation mark pairing.
Does it understand style differences?
Yes. It follows standard English punctuation rules but does not enforce opinionated style choices. For example, it will not force the Oxford comma — but it will flag clearly missing commas that change meaning.
Can it fix quotation marks?
Yes. It catches unmatched quotation marks, straight vs curly quote inconsistencies, and wrong nesting of single and double quotes.
Does it check only punctuation?
This page focuses on punctuation, but the full Grammar Checker also catches spelling, grammar, and syntax errors in a single pass.
Need spelling and grammar checks too?
Run a full grammar check on the same text