Coleman-liau Index Calculator


About Coleman-liau Index Calculator (Formula)

The Coleman-Liau Index Calculator is a tool used to calculate the Coleman-Liau Index, which is a readability index commonly used to assess the readability level of a text. It provides an estimate of the grade level required to comprehend the text.

The formula for calculating the Coleman-Liau Index is as follows:

CLI = 0.0588 * L – 0.296 * S – 15.8

where: CLI is the Coleman-Liau Index, L is the average number of letters per 100 words, and S is the average number of sentences per 100 words.

The Coleman-Liau Index formula calculates a score based on the average number of letters and sentences per 100 words in the text. The resulting index represents the U.S. grade level required to understand the text. A higher index indicates a higher reading difficulty level, while a lower index suggests a lower reading difficulty level.

The Coleman-Liau Index is useful for evaluating the complexity of a text and determining its appropriateness for different readerships. It is often used in educational settings, content creation, and text analysis.

The HTML and JavaScript code provided above presents a simple Coleman-Liau Index Calculator. Users can input the average number of letters per 100 words and the average number of sentences per 100 words. When the “Calculate” button is clicked, the calculator applies the Coleman-Liau Index formula and displays the result. The calculated index helps users gauge the readability level of their text and make informed decisions based on the target audience or desired reading difficulty.

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