vust

Grammar Checker

Fix Grammar Mistakes Instantly

Paste any text — every error is highlighted and explained. Grammar, syntax, punctuation — with clear before/after and a rule for each fix.

AI-powered. Try free. 10 per 4 hours.Powered by GPT-4o mini
0/ 5,000•10/10 free
Try GrammarBot in Telegram|Full workspace
Errors in contextRule explanationsGrammar + spelling

See the difference

Real corrections with explanations — not just red underlines.

Email

Before

I wanted to informed you that the meeting have been moved to Thursday and we will discussing the new project.

After

I wanted to inform you that the meeting has been moved to Thursday and we will be discussing the new project.

Verb forms: informed → inform, have → has, will discussing → will be discussing

Essay

Before

The impact of social media on teenagers are widely debated. Many researchers argues that it effect mental health.

After

The impact of social media on teenagers is widely debated. Many researchers argue that it affects mental health.

Subject-verb: are → is, argues → argue. Word form: effect → affects

Message

Before

Can you send me the file what we was talking about yesterday? I need it untill tomorrow.

After

Can you send me the file that we were talking about yesterday? I need it until tomorrow.

Pronoun: what → that. Verb: was → were. Spelling: untill → until

02·Practical use cases

Who uses this grammar checker and what they get.

Student

Proofread an essay or lab report paragraph

See subject-verb agreement, tense, and punctuation fixes inline — each change comes with a short grammar rule so you learn why it was wrong.

Professional

Clean up a client email or Slack update

Keep your meaning and tone; the grammar checker only fixes mistakes in spelling, syntax, and word choice before you hit send.

ESL writer

Check a LinkedIn post or cover letter draft

Errors stay highlighted in context (not a wall of suggestions). You get a corrected line and an explanation you can scan in seconds.

03·How it works

How the grammar checker works on the web.

01Paste

Paste any English text into the box at the top — emails, essays, job applications, or chat messages. The free web grammar checker accepts up to 5,000 characters per run.

02Check

Click Check. The tool marks grammar, spelling, punctuation, and syntax issues in place and shows a suggested fix plus a one-line rule for each error.

03Copy

Apply the fixes you want, copy the clean text, or open @vustGrammarBot in Telegram for longer documents, history, and the same crystal wallet as other VUST bots.

04·Same tool · in Telegram

Telegram

Same grammar checker in Telegram — longer texts and history.

@vustGrammarBot · Forward a message, paste a long doc, or run checks from mobile. Uses the same VUST wallet; no second account.

Open in Telegram

05·Quality & trust

What to expect from this tool.

What it checks

One pass covers grammar, syntax, punctuation, spelling, and common word-choice mistakes. You see before/after in the text — not a separate report you have to map back manually.

Privacy

Your text is sent only to run the check and is not used to train models. Do not paste passwords, API keys, or other secrets into any online grammar tool.

Free quota

The web grammar checker includes 10 free checks per 4 hours. Need more volume or saved runs? Use GrammarBot in Telegram with the shared VUST wallet and crystal packages.

Frequently asked questions

Other VUST writing tools (one wallet).

Online Translator

Translate text in 100+ languages with DeepL.

Text Rephraser

Rephrase text in 6 writing styles.

Ready when you are

Run a grammar check before you send the next email or essay.

Use the checker at the top of this page — free, no signup. For longer texts, continue in Telegram without losing your crystal balance.

Check my textOpen in Telegram