Grammar Checker is a free AI tool built for one job: fix grammar, spelling & style. You give it text, and it returns publish-ready prose that keeps your voice instead of sounding machine-made. It is made for writers, students, editors and content teams who want a result they can actually use, not a blank chat box and a blinking cursor.
Most people using general chat assistants for long-form and short-form writing spend more time fixing the prompt than reading the answer. Grammar Checker removes that step. Every run is sent through a tuned instruction set, a model chosen for this task type, and an output format that is ready to copy straight into your doc, editor or codebase. Because the inputs are structured, results stay consistent between runs — useful when you need ten of something rather than one. Everything runs in the browser on desktop, tablet and phone, with your history saved privately to your account when you sign in.
Find and fix grammar and spelling issues. Rather than making you describe the task from scratch every time, Grammar Checker ships with a system prompt written specifically for drafting, restructuring and tightening copy. That prompt tells the model what good looks like in long-form and short-form writing — structure, rhythm and readability at a target grade level — and what to avoid, most notably generic filler sentences and repeated openers. The form on the page collects exactly the context the model needs (text) and nothing you would have to invent.
“Fix grammar, spelling & style”
A reasonable but generic result — correct, but not tailored to your situation.
“Fix grammar, spelling & style”
A writing result that reflects your audience, constraints and goal — usually usable with light editing.
Grammar Checker is used to fix grammar, spelling & style. It is aimed at writers, students, editors and content teams, and it is most useful for drafting, restructuring and tightening copy where you want a strong first draft quickly rather than a blank page.
Yes. Grammar Checker is free to use and no credit card is required. Creating a free account adds saved history, favorites and higher usage limits.
Just text. The more specific your input, the more tailored the output — for example, “Fix grammar, spelling & style” will outperform a one-word prompt.
Requests are routed through the Lovable AI Gateway, which selects an appropriate model for the task — a reasoning-capable model for analytical work and a faster model for short generations — and fails over to an alternative provider if one is unavailable.
Good enough to work from, not good enough to publish unchecked. Grammar Checker can hallucinate details, so review anything factual, and confirm figures or citations against a primary source.
Your inputs and outputs are stored only against your own account and protected by row-level security, so no other user can read them. We do not sell your data or use it to train public models. See the Privacy Policy for full detail.
Yes, subject to our Terms and Acceptable Use Policy. You are responsible for reviewing output before publishing it, especially for factual, legal or brand-sensitive material.
A general assistant needs you to supply the expertise in the prompt. Grammar Checker already contains it: the instructions, output format and quality bar for long-form and short-form writing are built in, so you get a usable result on the first run instead of the third.