Grammar Checker
Check and fix grammar and spelling errors
What is this tool?
Scans text for common spelling, spacing, capitalization, and punctuation issues and highlights them so you can review and fix each one -- useful for a final pass over an email, a document, or a post before sending or publishing it, catching the kind of small mistakes that are easy to miss when reading your own writing. Doesn't catch full grammar issues like subject-verb agreement -- see the tip below.
How to use it
Paste your text, review the flagged issues one at a time, and accept or ignore each suggestion based on your own judgment.
This checker catches mechanical issues -- common misspellings, doubled words, extra spaces, missing capitalization, and repeated punctuation -- not full grammar or subject-verb agreement. A sentence like "This are a test" reads as spelled and punctuated correctly to this checker, even though the grammar is wrong, since that requires understanding sentence structure, not just pattern-matching individual words. A final read-through by a person is still worth doing for anything important.
Watch: Grammar Checker in Action
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Tighten up awkward phrasing
Frequently asked questions
How to use Grammar Checker
Paste or type your text into the box and click check. The tool scans for common mechanical issues -- misspelled words matched against a dictionary of frequent typos, doubled words ("the the"), extra spaces, missing capitalization at the start of sentences and for standalone "I", and repeated punctuation ("!!!" or "??") -- and highlights each one it finds with a brief note on what it changed or flagged. Review each flagged issue and accept or ignore it as you see fit; nothing is changed automatically without your review.
When to use it
A quick final pass over an email, a social media post, or a short document before sending or publishing it, specifically to catch the small mechanical slips that are easy to miss when reading your own writing -- a typo, a doubled word from editing, a missing capital letter. It's a fast, no-signup check for exactly that category of mistake, not a substitute for careful proofreading of longer or more important documents.
When not to use it
For anything where full grammatical correctness matters -- a job application, a formal document, an academic paper -- this tool's scope is genuinely narrower than a complete grammar checker; it doesn't catch subject-verb agreement, tense consistency, or sentence structure issues, only the mechanical categories listed above. For that level of review, a human proofreader or a more comprehensive grammar-checking service that actually parses sentence structure is the right tool, not this one.
Tips for best results
Run the check again after making edits based on its first pass -- fixing one issue occasionally reveals or creates another nearby (removing a doubled word can shift punctuation spacing, for instance), so a second pass on a longer piece of text catches anything the first pass's fixes introduced. For anything genuinely important -- a cover letter, a formal email to someone you don't know well -- read it aloud to yourself as a final check after this tool's pass, since reading aloud catches grammatical and flow issues (like subject-verb mismatches) that this tool's mechanical checks don't cover.
Limitations
Spelling correction is based on a dictionary of common misspellings, not a full analysis of every word against a complete dictionary -- unusual but correctly spelled words, names, and technical or industry-specific terms may occasionally get flagged, and some legitimate rare typos outside the common-mistake list won't be caught. As covered directly above, full grammar (like "This are a test") isn't detected at all -- this is a stated, deliberate scope limit, not an oversight.
Privacy
All checking happens directly in your browser against a built-in set of rules and common-mistake patterns -- your text is never sent to any server or external service to be checked, unlike some grammar tools that route your writing through a cloud-based language model.
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