Free AI Grammar Checker
Fix grammar, spelling, and punctuation errors instantly. Get explanations for every correction. 2000 words free.
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What is an AI Grammar Checker?
An AI Grammar Checker analyzes your text for grammar mistakes, spelling errors, and punctuation issues—then fixes them with explanations so you actually learn. Choose strict, balanced, or minimal checking based on what you're writing. 2000 words per check, completely free, no account required.
Unlike basic spell-checkers that only catch typos, this tool understands context and catches subtle grammar errors that change meaning. Each correction includes the error category and a one-sentence explanation of the grammar rule, turning every check into a learning opportunity.
Key Features
Three Checking Modes for Every Writing Style
Strict mode catches everything. Balanced mode fixes obvious errors while keeping your voice. Minimal mode only touches glaring mistakes.
Learn from Every Correction
See exactly what was wrong and why. Each fix includes the error category (grammar, spelling, punctuation) and a one-sentence explanation.
2000 Words Free, No Sign-Up Wall
Check up to 2000 words per run—more than most free tools. No email, no credit card, no browser extension install required.
Context-Aware Correction Modes
Tell the AI what you're writing (professional email, academic paper, casual message) and it adjusts correction standards accordingly.
Before/After Comparison View
See your original and corrected text side-by-side. Quickly spot changes and decide what to keep.
Perfect for everyone
- Students polishing essays
- Professionals writing emails
- Non-native English speakers improving language skills
- Content creators proofreading blog posts
How to Use the AI Grammar Checker
Three steps to error-free writing.
Paste Your Text
Drop in up to 2000 words. Pick strict, balanced, or minimal checking mode based on your needs. Optionally set writing context (professional, academic, casual).
Generate Corrections
Click generate. The AI scans for grammar, spelling, and punctuation errors in seconds. Every mistake gets flagged with category labels and explanations.
Review & Copy
Compare before and after versions. Read explanations to understand what was wrong. Copy the corrected text and use it anywhere—emails, documents, posts.
Who Uses the AI Grammar Checker?
Writers, students, and professionals use it daily.
Student Essay Proofreading Before Submission
Run strict mode on your essay draft to catch every grammar slip and punctuation mistake before turning it in. The explanations help you avoid the same errors next time.
Professional Email Grammar Check
Paste your email draft, set context to 'Professional,' and fix any grammar errors that could make you look careless. Sends emails that read polished and confident.
ESL Writing Practice and Improvement
Non-native speakers paste their practice paragraphs, get corrections with explanations, and learn English grammar rules through real examples from their own writing.
Blog Post and Article Proofreading
Content creators run their blog drafts through balanced mode to catch typos and punctuation errors without over-correcting natural voice and casual phrasing.
Job Application and Resume Error Check
Before sending a cover letter or LinkedIn message, check it for spelling mistakes and grammar errors. Even one typo can cost you an interview.
Social Media Caption and Message Review
Run casual mode on your Instagram captions or Discord messages. Fix glaring errors but keep the informal tone intact.
Tips for Best Results
Pro tips for better results.
Use Strict Mode for Formal Writing Only
Strict mode catches every minor error—great for academic papers and professional reports. For casual writing, it'll flag things that don't actually matter.
Read Explanations, Don't Just Copy
The explanations teach grammar rules. Spend 10 seconds reading why something was wrong—you'll make fewer errors in future drafts.
Set Writing Context to Match Your Audience
Professional context tightens grammar rules. Casual context allows contractions and informal patterns. Match the setting to how formal your writing needs to be.
Run Multiple Passes for Long Documents
If your text is over 2000 words, break it into chunks. Check each section separately to stay under the limit.
Compare Correction Modes When Unsure
Generate 2-3 variants with different modes (strict vs balanced). Pick the one that fixes errors without killing your voice.
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Frequently Asked Questions
Five free generations an hour. Help keep it that way.
These tools use real AI credits. Reader support keeps them generous, private, and available without ads, accounts, or a paywall.
What support protects
5 generations per hour
No ads or paywall
The best available model
No tracking of your writing
What happens below the $100 hosting floor?
Public use may be reduced to 3 generations per day, and a lower-cost model introduced after Sep 30, 2026.
September hosting floor
$47 of $100
Keeps the tool online, fast, and free for everyone.
Raises the public cap to 10 generations per hour.
Higher-quality AI models for better, more coherent outputs.
Time to fix bugs and ship the features you ask for.
Advanced features, tool improvements, and your feature requests.
If these tools have been useful, a monthly pledge or one-time coffee genuinely helps.
Secure payment · no account for one-time support