Work out text readability score instantly with clear inputs, formula shown and shareable results.
Flesch Reading Ease is 206.835 - 1.015 x words per sentence - 84.6 x syllables per word. Two hundred and fifty words in fourteen sentences with 410 syllables gives 50.0 - fairly difficult, at grade level 10.7. Plain English guidance targets 60-70, which means roughly fifteen word sentences and mostly one and two syllable words.
Flesch Reading Ease
206.835 - 1.015 x (words/sentences) - 84.6 x (syllables/words)
Flesch-Kincaid grade
0.39 x (words/sentences) + 11.8 x (syllables/words) - 15.59
Around 60-70 for general public communication, which corresponds to about US grade 8-9 reading level. Legal and medical writing often falls below 30.
Yes - chopping sentences arbitrarily raises it without improving clarity. The formula measures surface features, not comprehensibility.