Detect and correct grammar, spelling, punctuation, and sentence structure issues — with a fully corrected version and an explanation for every change.
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AI Grammar Checker is ToolifHub's free online tool for detecting and correcting grammar, spelling, punctuation, word-choice, readability, and sentence-structure issues in any English text. Paste your writing — an email, essay, blog post, report, or social caption — and the tool returns a fully corrected version alongside a detailed corrections list. Every correction is tagged by type (grammar, spelling, punctuation, word choice, readability, or sentence structure), shows the original phrase struck through, displays the corrected replacement, and includes a brief explanation of why the change improves the text. This explanation-first approach helps you learn from mistakes rather than blindly accepting changes. Use AI Grammar Checker as a final pass before publishing, as a learning tool for English writing improvement, or as a quality check after humanizing or paraphrasing text with other ToolifHub AI tools. The tool accepts up to 8,000 characters per request and delivers results in seconds — completely free, with no account required.
AI Grammar Checker is a free tool on ToolifHub that scans any pasted text for grammar, spelling, punctuation, word-choice, readability, and sentence-structure issues. You receive a fully corrected version of your text plus a detailed list of every correction — each tagged by type (grammar, spelling, punctuation, etc.) with the original phrase, the corrected phrase, and a short explanation of why the change was made.
Use it as a final editing pass before publishing blog posts, submitting essays, sending professional emails, or delivering client copy. The tool catches errors that basic spell-checkers miss — subject-verb disagreements, comma splices, awkward phrasing, and inconsistent tense usage.
Pair it with the AI Paraphraser for tone adjustments or the AI Text Humanizer for AI-specific polishing. Browse all tools in AI Tools or read our Privacy Policy.
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Catch grammar and spelling errors before submitting assignments, and learn from explanations to improve your writing over time.
Run a final grammar pass on blog posts, newsletters, and social captions before publishing to maintain professional quality.
Polish emails, reports, proposals, and presentations before sending to colleagues, clients, or executives.
Quality-check client deliverables and provide cleaner copy without spending time on manual proofreading of every sentence.
Improve English writing with explanations that teach correct grammar patterns, not just flag errors silently.
Use as the final step after humanizing or paraphrasing AI drafts to catch errors introduced during automated rewriting.
Explore more tools in our AI Tools category, or browse all free online tools on ToolifHub.
AI Grammar Checker on ToolifHub provides a fast, free, explanation-driven way to fix grammar, spelling, punctuation, and sentence structure issues in any English text. With detailed corrections that teach you why each change matters, it is both a proofreading tool and a writing improvement aid. Use it as the final step in your AI-assisted writing workflow alongside the AI Text Humanizer, AI Paraphraser, and AI Content Detector — all free in the AI Tools category on ToolifHub.
AI Content Detector
Estimate whether text was written by AI or a human — with AI probability, human probability, confidence level, and highlighted suspicious sections.
AI Paraphraser
Rephrase text in Standard, Fluency, Formal, Academic, Creative, or Simple modes — with options to preserve meaning, shorten, expand, or improve readability.
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Generate bullet, short, detailed, executive, or key-takeaway summaries.
AI Text Humanizer
Rewrite AI-generated text so it sounds natural and human — with light, medium, or strong intensity and options to preserve meaning, formatting, and readability.
AI Paraphraser
Rephrase text in Standard, Fluency, Formal, Academic, Creative, or Simple modes — with options to preserve meaning, shorten, expand, or improve readability.
AI Content Detector
Estimate whether text was written by AI or a human — with AI probability, human probability, confidence level, and highlighted suspicious sections.
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