Grammar checker
A free online grammar checker for essays, emails, and articles. It catches the spelling, punctuation, and grammar mistakes that browser spellcheck misses, then shows each one with a short explanation and a one-click fix. No signup, no word limit beyond a single 20,000-character check, and the language is detected for you.
Run a check to see issues here
Write or paste text, then press Check grammar. Powered by LanguageTool.
Powered by LanguageTool. Accepting a suggestion rewrites that span in the editor and re-aligns the remaining suggestions.
How it works
Get a strong first draft, then make it yours
Phrasit drafts and checks. You keep control of the words, the facts, and the voice. Nothing is published or sent for you, and every result is yours to edit.
- Drop in your text, or start from a sample
- Pick a tool and watch the result stream in
- Edit it into your own voice
- Verify anything that matters. The tools draft, you decide.
How the grammar checker works
Press Check grammar and your text is sent to LanguageTool, an open-source proofreading engine, which returns a list of issues with suggested replacements. Each issue is tagged spelling, grammar, or style, and the exact word or phrase is highlighted inside its sentence so you can see the problem in context. Click a suggestion to apply it in place; the remaining issues re-align automatically so the next fix still lands on the right characters.
The reason a grammar checker beats the spellcheck built into your browser or word processor is context. Spellcheck only asks whether a word exists. It cannot tell that there should be their, that were should be was, or that effects should be affects, because every one of those words is real and correctly spelled. A grammar check reads the words around each one and judges whether the sentence holds together, which is how it catches agreement, tense, punctuation, and homophone errors that spellcheck waves through.
The three kinds of issue it flags
Every issue lands in one of three colour-coded categories. Spelling and grammar are objective: they are right or wrong. Style is advisory, so read each style note and keep only the changes that make the sentence clearer for your reader.
Spelling
A word that is not in the dictionary, a typo, or a real word used where a similar-looking one belongs.
Catches: teh, recieve, definately, alot, and homophone-style slips like their, there, and they're when the surrounding words give them away.
Grammar
A structural mistake: the words exist but the sentence breaks a rule of agreement, tense, or article use.
Catches: subject-verb disagreement, wrong verb tense, missing or doubled articles, dangling modifiers, and comma splices.
Style
Writing that is technically correct but weaker than it could be. These are suggestions, not errors, so weigh each one.
Catches: wordy phrasing, repeated words close together, passive voice where active reads cleaner, and redundant qualifiers.
Before and after: real corrections
Each pair below is a mistake the checker actually flags, with the corrected version and a short note on why the fix matters. These are the slips that survive a careful read because the brain quietly fills in what it expected to write.
Homophone confusion
Before: Your going to love how this effects your writing.
After: You're going to love how this affects your writing.
Spellcheck passes both sentences because every word is spelled correctly on its own. A grammar checker reads context, so it flags your versus you're and effects versus affects, the two homophone slips that survive almost every first draft.
Subject-verb agreement
Before: The list of changes were sent to the team yesterday.
After: The list of changes was sent to the team yesterday.
The verb has to agree with the head noun list, not the nearer plural changes. This is the classic agreement trap created by a long noun phrase, and it is exactly the kind of mistake your eye glides over after the fourth read-through.
Doubled word and run-on
Before: We we shipped the the update on Friday it broke the build.
After: We shipped the update on Friday, and it broke the build.
Repeated words slip in when you edit a sentence twice, and a missing conjunction turns two clauses into a run-on. The checker removes the duplicates and proposes a comma plus and so the two events read as one connected thought.
Misplaced punctuation
Before: Lets meet at 3pm,we can review the draft then.
After: Let's meet at 3 pm; we can review the draft then.
Three issues in one short line: a missing apostrophe in let's, a missing space after the comma, and a comma splice joining two independent clauses. The checker offers the apostrophe, the space, and a semicolon to fix the splice.
When to use it, and when to read instead
Run a grammar check at the end of a draft, once the ideas are settled. Use it on the last email before you hit send, on the cover letter that has to read clean, on an essay the night before it is due, and on any text you have read so many times that your eye now skips the mistakes. The tool is at its best on that final mechanical pass, clearing the typos, agreement slips, and stray commas so the writing stops tripping the reader.
It is not the right tool for deeper editing. A clean grammar result does not mean a paragraph belongs where it sits, that an argument convinces, or that the tone fits the person reading it. It will not tell you a sentence is too long, only that it is grammatical. After the check comes back clean, read the text aloud once. Your ear catches rhythm, repetition, and meaning that no rule engine can score.
Tips for getting more out of each check
- Check one section at a time for long documents. A single pass handles up to 20,000 characters, and smaller chunks return faster and stay inside the request timeout.
- Apply fixes top to bottom, and re-run the check after a large manual edit. Each suggestion points at a character position, so heavy editing shifts those positions and the stale-text banner will prompt you to refresh.
- Read every style flag, but accept selectively. Passive voice, long sentences, and repeated words are sometimes exactly what you intended.
- Trust the spelling and grammar flags more than the style ones. The first two are objective; the third is a suggestion that depends on your voice and audience.
- Strip sensitive details before checking a confidential draft, since the text is sent to the checking service to be analysed.
Frequently asked questions
- Is this grammar checker really free, with no signup?
- Yes. There is no account, no trial, and no card. Paste your text, press Check grammar, and apply the fixes you want. The tool runs on the open-source LanguageTool engine, which is why there is no paywall on the core checks.
- Will it count my words while I check grammar?
- The editor is for proofreading, not statistics, but the same text drops straight into the word counter if you need a count. Many writers run a grammar pass first, then check length against an essay or article target before submitting.
- How is this different from the spellcheck already in my browser or word processor?
- Built-in spellcheck only knows whether a word exists in the dictionary. It will happily pass their where there belongs, or were where was belongs, because each word is spelled correctly. A grammar checker reads the sentence around the word, so it catches agreement, tense, punctuation, and homophone errors that spellcheck cannot see.
- Does the checker fix everything, or do I still need to read my work?
- You still need to read it. The tool is reliable on mechanical errors that are objectively right or wrong, such as spelling, agreement, and punctuation. It cannot judge whether your argument is convincing, whether a paragraph belongs, or whether the tone suits the reader. Treat a clean result as a floor, not a finish line.
- Can I use it for British and American English?
- Yes. It auto-detects the language and follows the variety it identifies, so colour and color, or organise and organize, are judged against the matching convention. If you write in one variety but paste a quote in the other, expect a few spelling flags on the quoted words; ignore those.
- Is it safe to paste a confidential draft?
- The text only leaves your browser when you press Check, at which point it is sent to the checking service to be analysed and is not stored by this site. Even so, for anything sensitive, strip names, figures, or identifiers you would not want to leave your machine before running a check.
- Why was a sentence I know is correct flagged as an error?
- Grammar and style rules are heuristics. Proper nouns, technical jargon, deliberate sentence fragments, and creative phrasing sometimes trip a rule. Every suggestion is optional. Apply the ones you agree with and dismiss the rest by leaving them alone.
- How long can the text be?
- A single check handles up to 20,000 characters, roughly 3,000 words. For a long essay or chapter, check one section at a time. Splitting also keeps each check fast and well inside the request timeout.
About the Grammar checker
The grammar checker reviews a block of writing for spelling slips, grammar errors, and style wrinkles, then lists each issue with a one-click fix. It is built on LanguageTool, an open-source proofreading engine, so it catches the things spellcheck misses: subject-verb agreement, misused homophones like their and there, doubled words, and awkward phrasing.
Reach for it when you have stared at a paragraph long enough that your eye skips the mistakes. Paste an email, an essay, a cover letter, or a product description, run a check, and apply the suggestions you agree with. It handles up to 20,000 characters per check and detects the language automatically, so you can drop in text without setting anything up first.
How to use it
- Paste or type your text into the editor on the left. Up to 20,000 characters are checked in one pass.
- Press Check grammar to send the text to LanguageTool and pull back the list of issues.
- Read each issue in the right-hand panel, colour-coded as spelling, grammar, or style, with the problem word highlighted in its sentence.
- Click a suggested replacement chip to apply that fix in place; the text and remaining issues update so offsets stay correct.
- If you edit the text after a check, re-run the check before applying more fixes, since the stale-text banner warns you the suggestions no longer line up.
- Use Try sample to see how flagged issues look, or Clear to start over.
Examples
Catching a homophone and an agreement error
Input: "Their are several things which the checker will catches." The tool flags "Their" as a misspelling-style confusion and offers "There", and flags "will catches" as a verb agreement error suggesting "will catch". Two clicks fix both without touching the rest of the sentence.
Tidying a doubled word
Input: "We we should ship on Friday." LanguageTool detects the repeated "we" and offers a single "we" as the replacement, with the delete option shown as (delete). The fix collapses the duplication and the highlighted context shows exactly where the repeat sat.
A clean pass
Paste a polished sentence with no errors and the check returns zero issues with a No issues found message. That is a useful signal that the obvious mistakes are gone, though it is not a guarantee that the meaning or tone is right.
Frequently asked questions
- What engine powers the checks?
- LanguageTool, an open-source grammar and style engine. The tool sends your text to its check endpoint and maps the results into spelling, grammar, and style categories with suggested replacements for each match.
- Is there a length limit?
- Yes. A single check accepts up to 20,000 characters. For longer documents, check a section at a time. Each request also has a short timeout, so very large pastes may need splitting.
- Does it pick the right language automatically?
- It runs in auto-detect mode and reports the language it identified as a badge. If your text mixes languages, detection follows the dominant one, which can miss errors in the minority language.
- Why did a correct sentence get flagged?
- Style and grammar rules are heuristics, not absolute truth. Proper nouns, technical jargon, and deliberate fragments sometimes trip a rule. Apply only the suggestions you agree with and ignore the rest.
- Why are my fixes greyed out after editing?
- Each suggestion points to a character offset in the text you checked. If you edit afterwards those offsets shift, so the tool asks you to re-run the check first to keep replacements landing in the right spot.
Good to know
A grammar checker is a second pair of eyes, not an editor. It is strong on mechanical correctness, the kind of error that is objectively right or wrong, and weak on judgement: whether your argument lands, whether a sentence is too long, whether the tone fits the reader. Use it to clear the mechanical noise, then read the text aloud once for rhythm and meaning.
If you write in a specific dialect, note that British and American conventions differ on spelling and some punctuation, and the engine follows whichever variety it detects. For privacy-sensitive drafts, remember the text is sent to a checking service to be analysed; strip names or figures you would not want to leave your machine before running a check.