Grammar Checker
Paste your text and instantly find grammar, spelling, and punctuation errors. Get clear suggestions to improve your writing. Free, no signup, checked by the LanguageTool service.
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How to check grammar and spelling
Paste your text, run the check, and apply the suggestions that improve it.
- 01
Paste a section at a time
Checking a few paragraphs at once keeps the list of issues manageable. The free checking service also limits how much text it accepts per request, about 20,000 characters, so split long documents.
- 02
Check, then go through the issues in order
Each issue shows the problem, the rule's explanation and one or more suggested fixes. Click a suggestion to drop it into your text.
- 03
Skip suggestions that change your meaning
A checker can't know what you meant to say. Names, technical terms and deliberate style choices are often flagged, so ignore those rather than accepting every change.
- 04
Copy the corrected text
When you're done, copy the result back into your email, document or CMS.
How the checking works, and where your text goes
This tool doesn't check text in your browser. When you press Check, it sends your text to the public API of LanguageTool, an open-source grammar checker run by LanguageTooler GmbH in Germany, with the language set to US English. LanguageTool returns each issue with its position, a message and suggested replacements, and the tool shows them over your text.
That means your text leaves your device and is handled under LanguageTool's privacy policy. Toolminex doesn't store it. For confidential documents, such as contracts, medical notes or unreleased plans, use a checker that runs locally, like the one built into Word or LibreOffice, rather than any online service.
What it catches well, and what it misses
LanguageTool combines thousands of hand-written rules with statistical checks. It's strongest on clear-cut mistakes and weakest on meaning.
| Kind of issue | Example | How well it does |
|---|---|---|
| Spelling | recieve → receive | Very good |
| Repeated words | the the | Very good |
| Subject-verb agreement | the results was → were | Good |
| Commonly confused words | your welcome → you're welcome | Good for common pairs |
| Punctuation and spacing | a missing comma before "which", double spaces | Good |
| Style and wordiness | "in order to" → "to" | Fair; often a matter of taste |
| Meaning, tone and facts | a sentence that's grammatical but unclear | Not checked |
It also checks US English only. British spellings such as colour, organise and travelled may be flagged as errors. That's expected rather than a mistake in your writing, so skip those if you write in UK English.
Getting more from each check
Fix spelling first and check again. A misspelt word can confuse the grammar rules around it, so a second pass after the obvious fixes often finds problems the first one missed.
Read the explanation before accepting a style suggestion. Rules such as "wordy phrase" or "passive voice" are opinions, and in a formal report or a legal letter the original wording may be the right one. Treat spelling, repeated words and agreement errors as near-certain, and style hints as suggestions. Finally, read the corrected text aloud once. It's still the best way to catch a sentence that's grammatical but doesn't say what you meant.
When a quick grammar check helps
A last pass on an important email
Paste it in before sending to a client or recruiter. Typos and a wrong "its" are the mistakes people notice most.
Proofreading a blog post section by section
Check each section as you finish it. Shorter pieces make it easier to spot which suggestions actually help.
Practising English grammar
Each issue comes with the rule's explanation, which helps you learn why something is wrong rather than only fixing it.
Limits worth knowing
- It needs an internet connection, since the checking happens on LanguageTool's servers.
- The free API allows only a limited number of checks per minute from one address. If checking fails after several quick runs, wait a minute.
- Formatting isn't kept. Paste plain text; bold, links and headings won't come back with the corrected version.
- It's US English only, as noted above, even though LanguageTool itself supports many other languages.