Free Spell Checker — Instant
Catch misspelled words, typos, repeated words, and confused word pairs instantly. Works on essays, emails, blog posts, and any English text. 100% free, no signup, runs in your browser.
What this spell checker catches
Our spell checker scans your text for the errors that slip past most drafts: common English misspellings (definately, recieve, seperate), commonly confused word pairs (your vs you're, their vs there, it's vs its, affect vs effect, loose vs lose, then vs than), repeated words (the the, is is), "of" after modals (could of → could have), and double spaces. It runs entirely in your browser — no upload, no sign-up, no character limit.
When to use it vs. a full grammar checker
Spell checking is a focused task: did you type the right letters in the right order? Grammar checking goes further — passive voice, sentence structure, tone, clarity. Use this spell checker when you need a fast pre-send sanity check on emails, assignments, or social posts. Use our grammar checker when you want broader style and structure review, or the readability checker to see how easy your text is to read.
Privacy: your text stays on your device
Unlike cloud-based spell checkers, ours runs entirely in JavaScript in your browser. Your text is never uploaded, logged, or stored. You can check confidential emails, legal drafts, medical notes, or personal journal entries without worrying about server leaks. Open DevTools → Network and verify — no requests are made when you type.
Frequently Asked Questions
Is this spell checker really free?▼
Yes — completely free, no signup, no word limit, no ads inside the tool. Runs in your browser for privacy.
How does it compare to Grammarly or Microsoft Word?▼
Ours catches the most common English spelling errors instantly with zero setup. Grammarly requires an account and upload; Word requires purchase and installation. For a quick free check without commitment, this is faster.
Does it work on essays, emails, and long documents?▼
Yes — no character limit. Paste any English text (essays, blog posts, emails, resumes, reports) and get instant results. Nothing uploaded, nothing stored.
What types of errors does it catch?▼
Common misspellings (definately, recieve, seperate), typos, repeated words (the the), double spaces, confused word pairs (your/you're, their/there, its/it's, affect/effect, then/than, loose/lose), and common grammar mistakes like "could of" → "could have".
Will my text be uploaded or saved?▼
No. All checking happens in your browser via JavaScript. Your text never leaves your device. No server processing, no storage, no content tracking.
Does it support British English?▼
Optimized for American English. British variants (colour, realise, centre) won't be flagged as errors, but regional misspellings may not be caught. For strict UK spelling, use Microsoft Word or a dedicated UK checker.
Can it detect AI-generated content?▼
Spell-checking and AI detection are separate tasks. For AI content detection, use our dedicated AI detector. For spelling only, this tool is optimized.
Other free writing tools
- Grammar Checker — broader grammar, style, and clarity review
- Readability Checker — Flesch–Kincaid grade-level score
- Word Counter — word, character, sentence, paragraph count
- Paraphraser — rephrase sentences while keeping meaning
- Plagiarism Checker — compare text against sources
- AI Content Detector — detect AI-generated writing