Free Online Tool
Readability Checker
Estimate how easy your text is to read using the Flesch Reading Ease score.
The Readability Checker lets you estimate how easy your text is to read using the Flesch Reading Ease score. Paste your text below and the result updates instantly as you type — no waiting, no upload, and nothing saved anywhere.
How to use the Readability Checker
- Paste or type your text into the box above.
- Adjust any options to match what you need.
- Read your result instantly — it updates live as you edit.
- Copy the result, or download it as a .txt file.
Key features
- Works instantly, with no page reload or waiting.
- Runs entirely in your browser — your text is never uploaded.
- Free to use, with no sign-up and no daily limit.
- Works on desktop and mobile, in any modern browser.
Questions
Frequently asked questions
Is the Readability Checker free to use?
Yes — the Readability Checker is completely free, with no sign-up, no trial period, and no hidden limits.
Is my text uploaded anywhere when I use the Readability Checker?
No. The Readability Checker runs entirely in your browser using JavaScript. Your text is processed on your own device and is never sent to a server.
Can I use the Readability Checker on my phone?
Yes. The Readability Checker works in any modern browser, including on mobile devices, with no app to install.
Is there a limit to how much text I can use?
There's no artificial limit. Because everything runs in your browser rather than on a server, the Readability Checker can generally handle as much text as your device can comfortably process.
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