Coleman-Liau Index Calculator - Free, Instant, In Your Browser
Paste text below (at least one full sentence) to calculate its Coleman-Liau index, another character-based readability estimate.
How to use Coleman Liau Index Calculator
- 1Paste your text or data into the input box above.
- 2Coleman Liau Index Calculator runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Index = 0.0588L − 0.296S − 15.8, where L is letters per 100 words and S is sentences per 100 words.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.