Free Grammar Checker
Write with confidence using RewriteMate's AI-powered grammar checker. Spot grammatical errors, spelling mistakes, and punctuation issues while refining clarity and enhancing your writing style.
Let's get started.
How the Grammar Checker Works
Our AI checks your text in three simple steps and gives you instant feedback.
Add your text
Paste or type any text into the editor. RewriteMate will scan it and underline any issues it finds.
Review corrections
Our AI highlights grammar mistakes, spelling errors, and punctuation problems. Each correction includes a note explaining what was changed.
Copy & use
Copy the corrected text with one click and paste it anywhere — emails, messages, documents, or social posts.
More Than a Grammar Check
RewriteMate does more than catch typos. It helps you write better everywhere.
Instant Proofreading
Polish your writing with corrections for grammar mistakes, spelling errors, and punctuation mishaps. Every fix includes an explanation so you learn as you go.
Clarity Improvements
Ensure your message is easy to understand. The AI suggests clearer phrasing and more concise wording so your reader always gets the point.
Tone Adjustments
Build stronger connections with tone recommendations. Switch between professional, casual, friendly, or formal to match any audience.
Easy Paraphrasing
Find new ways to express the same idea. RewriteMate can rephrase any sentence so you never sound repetitive.
Why Use RewriteMate's Grammar Checker?
Most grammar checkers only flag errors. RewriteMate goes further — it explains each correction so you understand why something was wrong and how to fix it. Over time, you will naturally write with fewer mistakes.
Unlike other online grammar checkers that require a subscription for basic features, RewriteMate's grammar checker is completely free to use with no sign-up required. Paste your text, click check, and get instant results.
When you need more than grammar — rewriting entire paragraphs, adjusting tone, or translating to another language — the full RewriteMate app is available as a keyboard extension on iOS and a menu bar app on macOS. It works in every app, not just a web editor.
Free tier uses AI-powered grammar checking. Limited to 5 checks per session.
