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AI Grammar Checker

Paste your text and get a corrected version in seconds — grammar, spelling, punctuation, and style — with every change explained.

Check Settings

0 / 5,000

Tips for best results

Use 'Full Check' for a complete review of grammar, spelling, punctuation, and style
Set Writing Style to match your context — Academic corrections differ from Casual
Paste one section at a time for more focused, detailed feedback
Switch to Diff view after checking to see exactly what changed, word by word

What you get

Corrected Text

The full text with all errors fixed, ready to copy and use.

Changes Made

A numbered list of every change with the original phrase, correction, and reason.

Diff View

Toggle to see the exact word-level changes highlighted inline — red for removed, green for added.

How it works

  1. 1

    Paste your text

    Paste up to 5,000 characters of any text — emails, essays, reports, social posts, or any writing that needs a review.

  2. 2

    Choose check type & style

    Select what to focus on — full check, grammar only, style, or punctuation — and optionally set the writing style context.

  3. 3

    Get corrected text + changes

    The AI returns the corrected text and a numbered list of every change made, with the original phrase and a clear reason for each fix.

Why use the AI Grammar Checker?

  • Every change explained

    Not just a corrected text — a numbered list of every edit with the original, the fix, and the reason. Learn while you correct.

  • Four check modes

    Full Check, Grammar & Spelling, Style & Clarity, or Punctuation only — focus on exactly what your text needs.

  • Style-aware corrections

    Set the writing style (Academic, Business, Casual, Creative, Technical) so corrections match the context of your text.

  • Corrected text ready to use

    The output starts with the fully corrected version — copy it directly into your document, email, or CMS without reformatting.

  • Instant results

    Results stream live as they are generated — no waiting for the full response before you can start reading.

  • History saved

    Every check is saved to your account so you can revisit past results, compare changes, and track improvements over time.

Who uses the AI Grammar Checker?

Anyone who writes professionally or wants their text to be error-free before it reaches an audience.

✍️

Writers & bloggers

Proofread articles, blog posts, and newsletter drafts before publishing — catch errors that slipped past a first read.

🎓

Students & academics

Check essays, research papers, and thesis drafts for grammar and punctuation errors before submission.

💼

Business professionals

Polish emails, reports, and proposals before sending to clients, partners, or executives.

🌍

Non-native English speakers

Catch grammar mistakes and awkward phrasing that are hard to self-edit when writing in a second language.

📱

Social media managers

Quickly review captions, ad copy, and posts before publishing — typos in public content are hard to undo.

📄

Developers & technical writers

Check documentation, README files, and technical guides for clear, error-free English before releasing.

Common grammar mistakes to watch for

These are the errors most writers miss on a self-edit — and exactly what the AI Grammar Checker is designed to catch.

1. Subject-verb disagreement

“The team are working hard” vs “The team is working hard” — collective nouns trip writers up constantly, especially in British vs American English. The checker flags these and applies the correction appropriate for your writing style.

2. Misplaced or missing commas

Comma placement is one of the most common sources of ambiguity in professional writing. Missing Oxford commas, comma splices, and incorrectly placed commas before conjunctions can change meaning entirely. The Punctuation check mode focuses on these specifically.

3. Apostrophe errors

“It's” vs “its”, “your” vs “you're”, and possessive plurals like “the managers' decisions” — these are small errors that significantly undermine credibility in professional and academic writing.

4. Passive voice overuse

Passive constructions like “The report was written by the team” are grammatically correct but weaken clarity and directness. The Style & Clarity check identifies excessive passive voice and suggests active alternatives — particularly useful for business and technical writing.

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Frequently asked questions

What does the AI Grammar Checker output?
Two sections: first, the fully corrected text ready to copy and use. Second, a numbered list of every change made — showing the original phrase, the correction, and a brief reason for each change.
What check types are available?
Full Check (grammar, spelling, punctuation, style, and clarity), Grammar & Spelling only, Style & Clarity only, and Punctuation only. Choose the focus that matches your need.
Does the writing style setting change what gets corrected?
Yes. Academic writing tolerates different constructions than Casual writing. Setting the style ensures the AI applies corrections appropriate for your context — for example, it won't flag intentional fragments in Creative writing.
How much text can I check at once?
Up to 5,000 characters per check. For longer documents, paste one section at a time for the most focused and detailed feedback.
Does it cost credits to check grammar?
Yes, each check uses 1 credit. Credits are included in your QuickerSign plan.
Can I check text in languages other than English?
The tool is optimised for English. You can try other languages and results may be useful, though quality will vary compared to English.