Free browser-based writing tool

Multilingual Readability Checker

Measure sentence length and readability with a formula selected for the language you are actually writing in.

Free forever · No sign-up · Local text processing

Multilingual Readability CheckerLive

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Analysis language Formula changes with the selected language

Text to analyze

Reading ease—Add text to begin

0Words0Sentences0Words / sentence0Syllables / word

Readability formulas estimate surface complexity. They do not measure accuracy, originality, or writing quality.

About this tool

Use the right readability formula for the language

Readability formulas are language-specific. This checker uses Flesch Reading Ease for English, Fernández-Huerta for Spanish, Kandel-Moles for French, Amstad for German, Gulpease for Italian, and an adapted Flesch formula for Brazilian Portuguese.

A score estimates surface difficulty from sentence, word, letter, or syllable patterns. It cannot measure factual accuracy, originality, style, or authorship, so use the supporting metrics to guide a human edit instead of chasing one number.

Three-step workflow

Use Multilingual Readability Checker in seconds

Select the language of the text.
Paste at least 80 words for a more stable estimate.
Review the score together with sentence length and syllable density.

Frequently asked questions

Questions about Multilingual Readability Checker

What is a good readability score?

It depends on the audience and formula. A score around 60 to 70 is often accessible in English, but specialist or academic writing can reasonably be harder.

Does a low score mean the writing is bad?

No. It means the surface structure is harder according to the selected formula. Technical precision may require longer words and sentences.

Is this an AI detector?

No. Readability does not identify authorship or prove whether text was written by a person or an AI system.