Free Grammar Checker That Explains Every Fix

An online grammar checker is a web app that reads your text for grammar, spelling and punctuation errors and suggests corrections. A modern one goes further and looks at clarity, style and tone of voice. Clever Grammar Checker underlines every issue, tells you which category it belongs to, explains the fix, and leaves accepting or rejecting it to you.

But it can. The “Accept all” button will make all of the corrections automatically, as always. What the explanations add is certainty that the checker understood what you meant, room to keep your style where it misread you, and a way to stop the same mistake occurring again. Correction plus explanation is what makes a checker a writing assistant.

Colors indicate the category of a comment: red = grammar, orange = spelling, blue = punctuation, purple = clarity, teal = style and word choice. Line style indicates severity: solid = error, dashed = suggested improvement, dotted = optional stylistic assistance. So a dotted teal underline is a suggested word choice, not a "mistake".

The score (40-100) represents overall readability/cleanliness of the document according to current number of open issues in terms of density. Each sub-score represents a different aspect: "Grammar" looks at grammar issues (hard errors). "Clarity" examines sentence structure, passive voice etc. "Style" reflects word-choice suggestions. "Readability" shows an estimation of sentence-length patterns. Accepting changes raises the score straight away.

Goals tune the optional layer, not the rules of grammar. Academic flags contractions and casual wording; Business and Professional flag wordiness harder; Casual mutes formality advice; Creative eases off passive-voice and sentence-length flags. A missing apostrophe is an error under every goal.

Yes. The checker underlines the sentences that are too long (one click to split them), passive constructions, repetitions, and wordiness, including “in order to” or “due to the fact that”. And the ↻ button on any sentence gives five rewrites: Improve, Simplify, Shorten, Make Formal, Make Natural.

It isn't, and neither is any other. Common errors it handles well; context and intent are where an algorithm goes wrong, because language hides a good deal between the words. That is why nothing is applied silently here: each suggestion explains itself, each can be dismissed on its own, and the last word is yours.

Essays, emails, articles, reports, cover letters, product descriptions, social posts — up to 3,000 words per check. The language of the text is automatically detected — 25+ languages supported, including English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Ukrainian, Turkish, Japanese, Chinese. The explanations are given in the language of the input text. Available in any mobile device or computer via a web-browser — no installations needed.

Yes — missing/misplaced commas, apostrophes in contractions, extra spaces, and common misspellings are all included, each with their own category so that you may easily separate and look through each type of error.

Yes — the tool includes a sentence checker. Paste a single sentence into the tool and click "Check my grammar", and the sentence corrector will either inform you that the sentence is correct or highlight the problematic part, provide the correct sentence and explain which grammar rules were violated. This is the fastest way to resolve an "is this grammatically correct?" argument.

"Grammar" — with two a's. "Grammer" (and "grammer check") is one of the most common English misspellings, which is a little ironic given what people are searching for. Fittingly, our spelling check flags it: the word comes from Latin "grammatica".

It performs the same primary functions: a writing assistant with explanations, accept and reject control, tone, and goals, but offers free options for up to 3,000 words without a premium barrier between the user and advice on clarity and style. Grammarly is an established solution that provides browser extensions and team features we do not attempt to equal; if one needs to primarily paste text to correct grammatical errors and understand them, this tool is subscription-free.

There is no catch. CleverFiles periodically releases new products for free; however, they begin to charge for premium products after 1-2 years. Grammar Check also does not have any ads or paywall, and registration is not mandatory, it only stores the past history of the user.