Coleman-Liau Readability Index

Calculate the Coleman-Liau Index CLI = 0.0588 × L – 0.296 × S – 15.8, where L is letters per 100 words and S is sentences per 100 words. Unlike most readability formulas, CLI uses characters rather than syllables, making it easy to automate.

Data set — comma or newline separated
Statistical Results — n = 8
Count (n)8
Sum (Σx)40
Min2
Max9
Range7
Q14
Q35.5
IQR1.5
Mean (μ)5
Median4.5
Mode4
Pop. Variance (σ²)4
Pop. Std Dev (σ)2
Sample Variance (s²)4.571428571
Sample Std Dev (s)2.138089935
Skewness0.65625
Excess Kurtosis-0.21875
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How to Use

Enter the values for the scenario you are assessing. Calculate the Coleman-Liau Index CLI = 0.0588 × L – 0.296 × S – 15.8, where L is letters per 100 words and S is sentences per 100 words. Unlike most readability formulas, CLI uses characters rather than syllables, making it easy to automate. Use the coleman-liau index result to inform your calculation.

Frequently Asked Questions