Essay Checker Free — Grammar, Structure, Readability
Last updated: 2026-03-17
You finished your essay at 2 AM. It is due at 8 AM. You need a second pair of eyes but nobody is awake. An essay checker catches the mistakes your tired brain missed.
What We Check
| Category | What We Look For | Examples |
|---|---|---|
| Grammar | Subject-verb agreement, tense consistency, articles | "The data shows" vs "The data show" |
| Spelling | Misspellings, homophones | their/there/they're, affect/effect |
| Punctuation | Commas, semicolons, apostrophes | Oxford comma, comma splices |
| Style | Passive voice, wordiness, cliches | "It was decided" → "We decided" |
| Readability | Sentence length, vocabulary level | Flesch-Kincaid grade level |
| Structure | Paragraph length, transitions | One-sentence paragraphs, missing transitions |
Common Essay Mistakes by Level
- High school: Run-on sentences, comma splices, informal language ("a lot", "stuff")
- Undergraduate: Passive voice overuse, weak thesis statements, citation errors
- Graduate: Hedging language ("it seems that"), nominalization ("the utilization of" → "using")
Check your essay — free, instant, detailed feedback.
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According to Purdue OWL, proofreading is most effective when done after a break from writing.
As Grammarly research shows, the most common writing errors are comma usage, subject-verb agreement, and pronoun reference.