Everything a careful editor would catch
SpellMistake reads your writing the way a proofreader does: word by word, then sentence by sentence.
Spelling
Catches typos, misspellings and commonly confused words like their, there and they’re, with one-click fixes.
Grammar
Flags subject-verb agreement, wrong tenses, missing articles and thousands of other grammar rules.
Punctuation
Finds missing commas, doubled spaces, stray capitals and punctuation that changes your meaning.
Style
Points out wordy phrases, repetition and redundancy so your writing reads cleaner and faster.
Many languages
Check English (US, UK, Canada, Australia) plus Spanish, French, German, Italian, Portuguese and more.
Free, no sign-up
Paste your text and check it. No account, no download, no limit on how often you come back.
How it works
- Paste your text. Emails, essays, blog posts, cover letters, anything up to 20,000 characters.
- Press Check text. Mistakes are underlined in color by type: spelling, grammar, punctuation or style.
- Click to fix. Pick a suggestion, or use Fix all, then copy your polished text.
The free grammar checker that explains every fix
SpellMistake checks your writing the way a careful editor would. It reads every word for spelling, then looks at how the words work together to catch grammar, punctuation and style problems that a basic spell checker misses, such as “she go”, “they was”, “could of” or “their going”.
Every suggestion comes with a short explanation, so you understand why it is a mistake and make it less often. You get a writing score out of 100, a readability rating and reading time, and you can fix issues one by one or all at once with Fix all.
There is nothing to install and no account to create. Paste your text, press Check and copy back your corrected writing. It works on desktop and mobile, in English and 13 other languages.
Grammar checker vs spell checker
A spell checker only asks whether each word exists. A grammar checker asks whether the sentence is correct. That difference matters, because many of the most common mistakes are made of real words:
| Sentence | Spell checker | SpellMistake grammar checker |
|---|---|---|
| She go to school every day. | No error found | go → goes |
| I could of called you. | No error found | could of → could have |
| Their going to be late. | No error found | Their → They’re |
| Yesterday I go to the market. | No error found | go → went |
| I recieved you’re message. | recieved → received | recieved → received, you’re → your |
Only need spelling? Switch to Spelling only in the checker, or use the dedicated spell checker.
Who uses SpellMistake
- Students proofreading essays, assignments and applications before they submit.
- Professionals checking emails, reports and LinkedIn posts before they hit send.
- English learners getting clear explanations for verb forms, tenses and agreement.
- Bloggers and marketers cleaning up articles, landing pages and product copy.
- Job seekers making sure resumes and cover letters are error-free.
Free writing tools
Each tool uses the same engine, tuned for a specific job.
- Spell CheckerFind and fix typos and misspellings
- Punctuation CheckerCommas, apostrophes and capitals
- Sentence CheckerCorrect one sentence at a time
- Essay CheckerProofread essays and papers
- Paragraph CheckerCheck and polish whole paragraphs
- UK English Grammar CheckerBritish spelling and grammar
- Spanish Grammar CheckerCorrector de gramática en español
Grammar guides
Quick guides to the words people confuse most, with examples and memory tricks.
Frequently asked questions
Is SpellMistake really free?
Yes. The online spell and grammar checker is free to use with no account required.
Do you store my text?
No. Your text is sent securely for checking and is not saved on our servers.
How long can my text be?
Up to 20,000 characters per check, which is roughly 3,000 to 4,000 words. Longer documents can be checked in parts.
Can a person proofread my work instead?
Yes. For important documents we offer human proofreading and editing. See our services.
Is SpellMistake a grammar checker or just a spell checker?
Both. It checks spelling, grammar, punctuation and style together. Switch to Spelling only if you just want typos.
Which languages does it support?
English (US, UK, Canada and Australia), plus Spanish, French, German, Italian, Portuguese, Dutch, Polish, Russian and Ukrainian.
How is the writing score calculated?
It compares the number of issues with the length of your text, with grammar mistakes weighted more than style suggestions. Clean text scores 100.