Test readability with LIX – Readability Index

What is the readability index (LIX)?

The readability index, often abbreviated LIX, measures how easy or difficult a text is to read by analysing sentence length and the proportion of long words.

Why are readability indices important?

They help communicators adapt texts to their target audience and ensure content is accessible to people with varying reading abilities.

LIX-test your text

Text you want to calculate LIX for:

Sentences must end with a full stop, exclamation mark or question mark.

Difficulty levels according to LIX

LIX value	Difficulty level
< 30	Very easy to read, children's books
30–40	Easy to read, fiction, popular magazines
40–50	Medium difficulty, normal newspaper text
50–60	Difficult, normal value for official texts
> 60	Very difficult, bureaucratic language