Readability Checker
Check the Flesch Reading Ease score and grade level of your writing.
Frequently asked questions
A 0-100 score estimating how easy text is to read, based on average sentence length and syllables per word. Higher scores mean easier reading — 60-70 is considered standard, plain English; scores below 30 are typical of dense academic or legal writing.
An estimate of the U.S. school grade level needed to understand the text on first read — for example, a score of 8.0 suggests 8th-grade reading level. It uses the same underlying sentence-length and syllable-count measurements as the Reading Ease score.
It depends entirely on your audience and assignment. General/plain-language writing usually targets 60+ Reading Ease (roughly 8th-9th grade); academic writing for a specific field is often denser and scores lower, which isn't necessarily a problem if that's the expected register.
No. This only measures sentence and word complexity, not grammar correctness or originality.
No. Every score is calculated entirely in your browser.
How to use
- Paste your text
An essay, article, or any writing.
- Read the scores
Reading Ease and grade level update instantly.
- Adjust your writing
Shorten sentences and simplify words to raise the score.
Why ToolerWork?
Updates instantly as you type.
Calculated locally — nothing is uploaded.
No signup or account required.
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Readability Checker
Check the Flesch Reading Ease score and Flesch-Kincaid Grade Level of any text, based on sentence length and syllable count.
Whether an essay reads as appropriately simple or unnecessarily dense usually isn't obvious just from re-reading it — the two standard measurements for this, Flesch Reading Ease and Flesch-Kincaid Grade Level, are both based on average sentence length and syllables per word, and this tool computes both instantly as you paste or edit text. A higher Reading Ease score means simpler, more accessible writing; the grade level estimates the US school grade needed to follow the text on a first read. Neither measures grammar or originality — just structural complexity.
How to use this tool
- Paste your text.
- Read the Flesch Reading Ease score and grade level.
- Shorten sentences and simplify words to raise the score, if needed.
Why users choose this tool
- Focused workflow for checking whether writing matches the reading level an assignment or audience expects.
- Helps meet assignment formatting and length limits.
- Improves writing awareness with instant metrics.
- Supports faster editing and revision cycles.
- Reliable a Flesch Reading Ease score, grade level, and sentence/word statistics generation with fewer manual steps.
Common use cases
- Check whether an essay's reading level matches what an assignment expects.
- Simplify writing intended for a general audience.
- Compare the complexity of two drafts of the same piece.
When to choose this tool
Readability Checker is usually faster than manual student workflows because it reduces repetitive steps and keeps the complete flow in one interface. Compared with heavyweight desktop software, this tool prioritizes speed, accessibility, and simpler controls so users can finish routine tasks quickly without installation or licensing friction. For users who mainly need checking whether writing matches the reading level an assignment or audience expects, this focused approach often gives better execution speed and cleaner day-to-day usability, while still producing a Flesch Reading Ease score, grade level, and sentence/word statistics that is suitable for practical work.
Privacy-first: Where browser-based processing is available, your files stay on your device. No file is uploaded to our servers unless strictly required for the tool to function.
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