Check grammar, spelling, punctuation, and style instantly. Every issue highlighted with one-click fix suggestions: paste and it checks automatically.
AI Fix corrects tense, agreement, articles & plurals in one pass
Paste your text: it auto-checks after a moment, or click Check Grammar.
Six error categories, powered by LanguageTool: the same open-source engine used by Mozilla and Automattic.
One tool for every writer: essays, emails, blog posts, and more.
Catch grammar and spelling errors before submitting coursework or dissertations.
Polish professional emails and business documents for a clear, confident tone.
Proofread articles and blog content without paying for expensive grammar tools.
Detailed explanations for each issue help you learn as you correct.
Grammar tools should explain errors, not just flag them. Every time we saw a tool underline something in red with no explanation, we saw a writer either dismiss it or blindly accept the wrong fix. We built the grammar checker so every flag comes with a plain-English explanation and the reasoning behind it: because understanding the rule is the only thing that stops the same mistake from appearing in the next draft.
Grammar mistakes reduce trust. Whether it is a misplaced comma, a subject-verb disagreement, or a misused homophone, errors in professional writing undermine credibility instantly. This free grammar checker uses the LanguageTool engine: the same open-source technology used by Automattic and Mozilla: to catch errors that basic spellcheckers miss. The grammar checker works across more than 20 languages, including English, Spanish, French, German, and Portuguese, with no word limits and no account required.
Every flagged issue comes with a plain-English explanation and a one-click fix suggestion. Unlike subscription grammar tools, this grammar checker has no daily caps and no paywalled features. Paste up to 20,000 characters: a full blog post or chapter: and get results in seconds. Content writers use this grammar checker before publishing. Students run it on essays before submission. Non-native speakers use it to catch idiomatic errors that basic spell-check misses entirely.
After correcting errors with this grammar checker, use the clarity checker to eliminate filler words and passive voice, the readability checker to verify your Flesch score, the paraphrasing tool to reword awkward passages, and the E-E-A-T Checker to score the overall content quality of the page.
Grammar is one layer: chain the full writing stack.
Free, no signup, no word-limit games. Paste your text and check grammar in one click.