Grammar Checker

Free grammar, spelling & style checker — powered by LanguageTool.

Grammar & Spelling 20+ languages No account needed
Your text is sent to LanguageTool for grammar analysis. 123TinyTools does not store or log it.
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Free Grammar Checker — Instant Grammar, Spelling & Style Check

Our free online grammar checker catches spelling mistakes, grammar errors, and style issues instantly. Powered by LanguageTool — one of the world's most trusted open-source grammar engines — it supports over 20 languages and applies thousands of language rules to your text. No sign-up. No installation. Works in any modern browser.

What This Grammar Checker Catches

  • Spelling mistakes — typos, misspelled words, homophones (there/their/they're, your/you're, its/it's)
  • Grammar errors — subject-verb agreement, tense consistency, missing articles, wrong word forms
  • Punctuation — missing commas, incorrect apostrophes, double spaces, quotation mark issues
  • Style suggestions — wordy phrases, passive voice, redundant expressions, informal language in formal contexts

How to Use the Grammar Checker

  1. Paste or type your text in the input box above.
  2. Select your language from the dropdown (defaults to English US).
  3. Click Check Grammar — results appear in seconds.
  4. Review each highlighted error and click a suggestion to apply the fix.
  5. Copy the corrected text when you're satisfied.

Powered by LanguageTool

This tool uses the LanguageTool open-source grammar engine, the same technology trusted by millions of writers, students, and professionals worldwide. LanguageTool checks more than just spelling — it analyses your writing in context, catching errors that basic spell checkers miss entirely.

Privacy — Your Text and LanguageTool

To check grammar, your text is sent to LanguageTool's servers for analysis. LanguageTool is a well-established, privacy-respecting open-source project and does not permanently store the text you submit. 123TinyTools does not receive, store, log, or process your text in any way — the connection goes directly from your browser to LanguageTool.

Frequently Asked Questions

Is this grammar checker completely free?
Yes, completely free. This tool uses LanguageTool's public API at no cost. No sign-up or account is required. For heavier professional use, LanguageTool offers a premium API with higher rate limits and additional rules.
Is my text sent to a server?
Yes — to check your grammar, your text is sent to LanguageTool's servers for analysis. LanguageTool is a reputable open-source project and does not permanently store the text you submit. 123TinyTools does not receive, store, or log your text in any way.
What languages are supported?
This tool supports over 20 languages including English (US, UK, Australian, Canadian), German, French, Spanish, Italian, Portuguese, Dutch, Polish, Russian, and more. Select your language from the dropdown before running a check.
How accurate is the grammar check?
Very accurate for spelling and common grammar errors. LanguageTool applies thousands of language rules, making it one of the most reliable open-source grammar checkers available. It catches spelling mistakes, wrong word usage, punctuation errors, and style issues.
Can I use this for professional writing?
Absolutely. This tool is well-suited for emails, blog posts, essays, reports, and other professional writing. It highlights potential errors across multiple categories — spelling, grammar, punctuation, and style — so you can review and accept each suggestion individually.

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