Readability tools and their formulas
| Assessment tool | Formula |
| Flesch Reading Ease Score | 206.835 – (1.015 × average no of words per sentence) – (84.6 × average no of syllables per word) |
| Flesch-Kincaid Grade Level | (0.39 × average no of words per sentence) + (11.8 × average no of syllables per word) – 15.59 |
| Gunning Fog Index | 0.4 (average no of words per sentence +(100 x average no of 3+syllable words) |
| Simple Measure of Gobbledygook Index | 3 + √Polysyllabic count |