AI Grammar Checker

What the grammar checker fixes

The checker is set up as a careful proofreader. It corrects spelling mistakes, grammar errors such as subject–verb agreement and tense, punctuation, and word-choice errors where a word is clearly wrong ("their" for "there", "affect" for "effect"). Sentences that are already correct are left exactly as you wrote them.

Alongside the corrected text you get a list of up to 40 changes. Each shows the original fragment, the fix, which kind of error it was and one sentence on why. An empty list means the checker found nothing to fix.

Why explanations matter

A checker that silently fixes your text helps one essay. A checker that tells you why helps every essay after it. Skim the change list for repeats — if half your corrections are comma splices or the same misspelling, that is the one thing to work on.

• Essays and coursework before you hand them in
• Emails, cover letters and applications
• Writing in a second language
• Teachers checking handouts and worksheets before printing

What it does not do

It does not judge your argument, restructure your paragraphs or make your writing sound more formal. For that, use the paraphrasing tool’s Fluent or Formal mode. And like any proofreader, it can miss an error or flag something that was intentional, so read the change list rather than accepting it blindly.

Tips for a cleaner check

Paste the final draft rather than a rough one. The checker fixes spelling, grammar, punctuation, agreement and clear word-choice mistakes and leaves the rest of your writing alone, so it is most useful once the content is settled.

Up to 12,000 characters of text, or a PDF, DOCX, DOC or TXT file up to 10 MB, can be checked in one run. The change list shows at most 40 corrections; for a long text with many errors, check it in parts so every change is explained.

• Read each explanation, not just the corrected text
• Look for the same mistake repeated — it is usually one rule to learn
• Keep deliberate style choices; the checker is told not to rewrite style
• Check names and technical terms, which can look like spelling errors

Example: what a correction looks like

Paste "Their going to the libary tomorow, and there teacher said its open late." and the corrected text comes back as one clean sentence, with a list of changes underneath. Each change shows the original fragment, the fix, a type such as spelling or grammar, and a one-sentence reason — for example that "their" shows possession while "they're" means "they are".

That list is the useful part for learning: after a few checks, the same few errors tend to show up, and you can fix them before you run the checker at all.