Essay Checker

Check an essay's readability and catch common grammar issues. Get word count, sentence count, average sentence length, and a Flesch reading-ease score alongside a list of flagged grammar issues — all processed locally in your browser. This is a writing-quality checker, not a plagiarism detector.

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Why use Essay Checker?

The Essay Checker combines two things: readability scoring and rule-based grammar checking. Readability is measured with the Flesch Reading Ease formula, which estimates how easy a passage is to read based on average sentence length and average syllables per word — useful for checking whether your essay matches the reading level expected by its audience. Grammar checking uses the same rule-based engine as the standalone Grammar Checker tool: spacing, punctuation, capitalization, repeated words, and commonly confused words. This tool intentionally does not claim to detect plagiarism — true plagiarism detection requires comparing text against a large external index, which this browser-only tool does not have access to.

Key benefits

Flesch reading-ease score to gauge how accessible your writing is
Word count, sentence count, and average sentence length at a glance
Same rule-based grammar checks used by the Grammar Checker tool
Runs entirely in your browser — nothing is uploaded

Features

Flesch Reading Ease score with a plain-language difficulty label
Word, sentence, and average-words-per-sentence stats
Rule-based grammar and punctuation issue detection
In-context snippets for every flagged issue

Popular use cases

Checking whether an essay’s reading level fits its intended audience
Spotting overly long sentences that could be split up
A pre-submission proofreading pass for common mechanical errors
Comparing readability across drafts as you revise

How to use Essay Checker

1
Paste your essay
Paste your essay or draft into the text box.
2
Click Check Essay
Get instant word/sentence stats, a reading-ease score, and a list of flagged grammar issues.
3
Revise
Use the stats and issue list to guide your revisions, then re-check after editing.

Frequently asked questions

Does this check for plagiarism?

No. This tool checks grammar and readability only. It does not compare your text against any external database or index, so it cannot detect plagiarism.

What is the Flesch reading-ease score?

A widely used readability formula based on sentence length and syllable count, scored 0-100. Higher scores mean easier-to-read text; most general-audience writing scores in the 60-70 range.

Does a low reading-ease score mean my essay is bad?

Not necessarily. Academic and technical writing often scores lower because of longer sentences and specialized vocabulary — use the score as one signal, not a grade.

Is my essay uploaded anywhere?

No. All analysis, including grammar checks and readability scoring, happens locally in your browser.

How is this different from the Grammar Checker tool?

The Essay Checker adds readability scoring and sentence-length stats on top of the same grammar rule checks, making it better suited to reviewing a full essay rather than a short passage.

Last reviewed: July 2026

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