Readability Score

In Depth

Readability scores use established formulas like Flesch-Kincaid, Gunning Fog, Coleman-Liau, and SMOG to estimate the education level required to understand a text. These formulas consider factors like average sentence length, average syllables per word, and word frequency. A Flesch Reading Ease score of 60-70 is considered optimal for general audiences. SynthRead combines multiple formulas into a single grade (A-E) with a population reach percentage.

Examples

• A Flesch Reading Ease score of 65 (suitable for 8th graders)
• A Gunning Fog Index of 12 (college-level reading)
• A SynthRead Grade B with 78% population reach

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