Free AI Grammar Checker — AI Writing Tool
Fix grammar, spelling, and punctuation instantly.
How to Use AI Grammar Checker — 3 Simple Steps
Paste your text
Type or paste your email, essay, social post, or article into the text box. Up to 2,000 characters per check.
Check grammar
Click Check Grammar. Claude reads your full passage and returns a corrected version with improved clarity and structure.
Review and copy
Read the corrected text and any explanations provided. Click Copy to use the improved version anywhere.
Why Use nexora.tools AI Grammar Checker?
Instant Results
Get professional output in seconds with no waiting or queue.
100% Private
Your content is never stored or shared. Complete privacy guaranteed.
AI Accuracy
Powered by Claude — one of the most capable AI models available.
Frequently Asked Questions About AI Grammar Checker
Paste your text into the AI Grammar Checker above and click Check Grammar. The AI reads your full passage and returns a corrected version with improved clarity, grammar, and sentence structure — no account needed.
The nexora.tools Grammar Checker is powered by Claude — an AI that understands context and nuance, not just rule-based corrections. It is especially strong at fixing awkward phrasing, passive voice, and clarity issues that rule-based tools miss.
Yes — and this is where AI grammar checking excels. Claude understands the intent behind imperfect sentences and rewrites them naturally rather than just flagging errors. It is widely used by ESL writers, international students, and non-native English professionals.
The Grammar Checker corrects subject-verb agreement, tense consistency, article usage, run-on sentences, comma splices, misplaced modifiers, passive voice, and unclear sentence structure — covering the full range of common English writing errors.
Yes. The Grammar Checker is used by professionals to polish emails, business reports, cover letters, and formal correspondence. It maintains your original meaning while improving clarity, tone, and correctness for professional contexts.
The Grammar Checker accepts up to 2,000 characters per check — approximately 300–350 words. For longer documents, paste one section at a time. Each check is free and unlimited, so you can process an entire document in multiple passes.