Grammar Checker
Paste your text to find common grammar, spelling, and style issues.
Paste your text to find common grammar, spelling, and style issues.
Good writing starts with clean grammar. Our grammar checker uses LanguageTool's open-source NLP engine to scan your text for grammar, spelling, punctuation, and style issues. Paste your text, click check, and see issues highlighted instantly with smart suggestions you can apply with one click.
The checker looks for several categories of issues. Spelling checks flag commonly confused word pairs like their and there, your and you're, its and it's, affect and effect, and about fifty other common mix-ups. Grammar checks catch missing capitalization after periods, sentences starting with lowercase letters, and missing periods at the end of text. Style checks find double spaces, repeated words like "the the," and other formatting inconsistencies.
Click the Check Grammar button and the tool scans your text against a set of rules. Each issue is highlighted in the text with a color-coded underline: red for potential spelling confusion, yellow for grammar issues, and blue for style suggestions. Click any issue in the list below the text to see the specific suggestion. The counts at the top give you a quick overview of how many issues were found in each category.
This grammar checker uses LanguageTool's open-source natural language processing engine to provide accurate grammar, spelling, and style analysis. LanguageTool analyzes your text using advanced NLP rules and pattern matching across more than 30 languages, catching context-sensitive errors that simple rule-based checkers miss. If the API is temporarily unavailable, the tool falls back to a built-in offline checker for basic error detection.
Your text is sent to the LanguageTool API for analysis. LanguageTool is an open-source project that does not store your text after processing. No account is required and no data is saved on our end. If the API is unavailable, the tool falls back to a local checker that runs entirely in your browser with no data sent anywhere.