Score your text on the Flesch Reading Ease scale (0–100). Higher means easier. Get a plain‑English category, ideal range, and per‑sentence breakdown.
Niet ontworpen voor Nederlands
Deze tool is gekalibreerd voor Engels (en enkele verwante talen). Resultaten in Nederlands zijn waarschijnlijk niet betekenisvol.
Flesch Reading Ease was developed by Rudolf Flesch in 1948 to measure how easy a piece of English text is to read.
The formula rewards short sentences and short words. Higher scores (90+) mean text a fifth-grader can read; very low scores (under 30) indicate academic prose.
It does not measure correctness, persuasiveness, or quality — only mechanical readability.
For general audiences aim for 60–70. Web copy and marketing often target 70+ for maximum reach. Academic writing typically scores 30–50.
The formula is 206.835 − 1.015 × (words/sentences) − 84.6 × (syllables/words). Lower numbers mean harder text.
No. The constants were calibrated on English. Use LIX or Coleman-Liau for European languages and treat results as approximate.
Only indirectly: longer words tend to have more syllables. For vocabulary-aware scoring use Dale-Chall.
U.S. grade level for your text.
readabilityPenalises complex (3+ syllable) words.
readabilityHealth & medical text grade level.
readabilityNo syllables needed — just characters.