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Free Grammar Checker. Check grammar, spelling, and punctuation online for free. Fix mistakes instantly and write with confidence — free with a free account.

Key Features & Benefits

Multi-Language Grammar Checking

Check grammar in six languages including English, Spanish, French, German, Portuguese, and Chinese. The AI understands language-specific rules and conventions, providing corrections that are contextually appropriate for each language's unique grammar structure.

Detailed Error Analysis

Every detected error includes the error type, the original text, the suggested correction, and a clear explanation of why it's wrong. This educational approach helps you understand the rules behind the corrections and avoid making the same mistakes in the future.

Overall Quality Score

Receive a comprehensive quality score from 0 to 100 that summarizes the grammatical health of your text. This quick metric helps you gauge at a glance how much work your text needs before you dive into the individual corrections and suggestions.

Improvement Tips

Beyond simple corrections, the grammar checker provides actionable writing tips based on the patterns it finds in your text. These tips help you develop better writing habits and improve your overall communication skills over time.

Context-Aware Corrections

The AI considers the full context of your text when suggesting corrections, not just individual sentences. This means it catches errors that simple rule-based checkers miss, such as tense consistency, pronoun references, and logical flow issues.

Corrected Text Output

Get a fully corrected version of your text with all suggested fixes applied. You can copy this directly or use it as a reference while making manual edits. The corrected text preserves your original voice and style while fixing grammatical issues.

Error Categorization

Errors are categorized by type — spelling, grammar, punctuation, style, and more. This categorization helps you identify your most common mistake patterns and focus your learning on the areas where you need the most improvement.

Instant Copy & Review

Copy the corrected text with one click for immediate use in your documents. The interface clearly separates the corrected text from the error details, making it easy to review what changed and why before accepting the corrections.

Grammar Checker – Frequently Asked Questions

What languages does the grammar checker support?
The grammar checker currently supports English, Spanish, French, German, Portuguese, and Chinese. Each language has its own set of grammar rules and conventions that the AI applies when analyzing your text for errors and suggesting corrections.
How accurate is the grammar checker?
The AI grammar checker is highly accurate for common grammatical errors, punctuation issues, and spelling mistakes. However, like any AI tool, it may occasionally miss nuanced errors or suggest unnecessary changes. Always review the suggestions critically before accepting them.
What does the overall quality score mean?
The quality score ranges from 0 to 100 and reflects the grammatical correctness of your text. A higher score means fewer errors were found. The score considers the number, type, and severity of errors detected relative to the length of your text.
Does the grammar checker catch style issues?
Yes, the checker identifies style issues such as passive voice overuse, wordiness, unclear phrasing, and inconsistent tone alongside traditional grammar errors. Style suggestions are advisory and may not always need to be followed depending on your writing context.
Can I use the grammar checker for academic writing?
Absolutely. The grammar checker is well-suited for academic writing and can help you catch errors before submitting papers. However, it should be used as a supplementary tool alongside careful proofreading, not as a replacement for thorough manual review of academic work.
What types of errors does it detect?
The checker detects a wide range of errors including spelling mistakes, subject-verb agreement, tense consistency, punctuation errors, article usage, pronoun references, sentence fragments, run-on sentences, and style issues like passive voice and wordiness.
How long can the input text be?
The grammar checker works well with texts up to several paragraphs in length. For very long documents, consider checking section by section for the most thorough and coherent analysis. Each check processes the entire context to provide accurate suggestions.
Is the grammar checker free to use?
Yes, the grammar checker is free to use with daily usage limits. Each grammar check counts as one use. No credit card is required, and you can use it as part of the Writing Lab suite alongside the other writing tools.