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LIX Readability Calculator

LIX measures readability using sentence length and proportion of long words (>6 letters). Works for many European languages.

मराठी साठी डिझाइन केलेले नाही

हे साधन इंग्रजीसाठी (आणि काही संबंधित भाषांसाठी) कॅलिब्रेट केले आहे. मराठी मधील निकाल अर्थपूर्ण नसण्याची शक्यता आहे.

कधी वापरायचे

Use LIX when working with Germanic or Romance languages (Swedish, German, Dutch, Norwegian, Danish, Spanish, French, Italian, Portuguese). It was specifically designed not to depend on English-specific syllable patterns, so it generalises better than Flesch-family formulas.

तुलना

LIX is the closest international equivalent of Flesch Reading Ease. Compared to Coleman–Liau, LIX uses word length thresholds (>6 letters) rather than averages, making it slightly less smooth but more interpretable.

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हे कसे कार्य करते

LIX (Läsbarhetsindex) is a Swedish readability index created by Carl-Hugo Björnsson in 1968.

It combines average sentence length with the percentage of "long" words — words with more than 6 letters.

It generalises better to many European languages than the Flesch-family formulas, which are tuned for English.

सूत्र

वारंवार विचारले जाणारे प्रश्न

What languages does LIX support?

LIX was designed for Swedish but works reasonably for Germanic and Romance languages: English, German, Dutch, Spanish, French, Italian, Portuguese.

What counts as a "long" word?

In LIX, any word longer than 6 characters.

What LIX score counts as easy or hard?

Scores below about 30 read as very easy, 30 to 50 as standard prose, 50 to 60 as fairly difficult, and above 60 as hard, technical text. Children's books typically sit under 30 while academic writing often exceeds 50.

How does LIX differ from Flesch?

LIX uses sentence length and the percentage of long words (over six letters) rather than syllables, which makes it work across many European languages. Flesch relies on syllable counts calibrated only for English.

व्यावहारिक उदाहरण

इनपुट

Det är en mycket lång mening med flera långa ord och tydliga underordnade satser.

आउटपुट

LIX: 39 — Medium / standard newspaper prose.

LIX combines average sentence length with the percentage of long (>6 letter) words. Most European-language news lands in the 30s–40s, and this Swedish sentence is squarely in that range.

सामान्य चुका

  • Language-agnostic does not mean perfectly comparable; LIX scales differ slightly across languages.
  • Defines "long" as >6 letters — works well in German (compound words) but is harsh on languages with longer average words.
  • Not validated for non-European languages (Arabic, Chinese, Japanese).
  • A single LIX number obscures whether difficulty comes from long words or long sentences.

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