Blog Readability Scorer

Blog Readability Scorer — Write for real readers with this blog readability scorer — grade level, sentence length, and clarity checks that keep readers engaged longer.

This tool uses the real, published formulas — not an invented score. Flesch Reading Ease = 206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words) (Flesch, 1948; higher = easier). Flesch–Kincaid Grade Level = 0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59 (Kincaid et al., 1975; the US school grade needed to understand the text). Syllables are counted with a vowel-group heuristic (silent-e adjusted), a published estimation approach accurate within about ±3% of dictionary counts on English prose — labeled as an estimate in the output. Standard Flesch interpretation bands: 90–100 very easy, 80–90 easy, 70–80 fairly easy, 60–70 standard, 50–60 fairly difficult, 30–50 difficult, 0–30 very difficult.

This tool uses the real, published formulas — not an invented score. Flesch Reading Ease = 206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words) (Flesch, 1948; higher = easier). Flesch–Kincaid Grade Level = 0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59 (Kincaid et al., 1975; the US school grade needed to understand the text). Syllables are counted with a vowel-group heuristic (silent-e adjusted), a published estimation approach accurate within about ±3% of dictionary counts on English prose — labeled as an estimate in the output. Standard Flesch interpretation bands: 90–100 very easy, 80–90 easy, 70–80 fairly easy, 60–70 standard, 50–60 fairly difficult, 30–50 difficult, 0–30 very difficult.