What is Readability?

Readability is simply how easy it is to understand a piece of writing. It shows us whether a text is easy or hard to read for its intended audience.

Cathoven Readability Checker

Think of our redability check as a friendly guide. It helps users find out how readable a text is. It uses special formulas to give a score, showing if a text is just right, too hard, or too easy for the intended readers. The checker is like a GPS for writers, pointing out if a text needs to be made more reader-friendly.

AND it’s free forever!

Breaking Down Readability Formulas

Our readability checker utilizes several diverse and well-regarded readability formulas. Let’s take a closer look at each one

Flesch-Kincaid Grade Level

The Flesch-Kincaid Grade Level formula uses sentence length and syllable count per word to estimate the education level needed to understand a piece of text. This score is a reflection of how many years of education someone would need to easily read the text. It’s often referred to as the “Flesch Reading Ease” score.

Gunning Fog Index

Another valuable tool in our readability checker arsenal is the Gunning Fog Index. This formula takes into account sentence length and the number of complex words to calculate a score, suggesting the level of education required to understand the content. It’s commonly known as the “Fog Index” or “Fog Score”.


Also in our lineup is the SMOG (Simple Measure of Gobbledygook) Formula. This unique formula calculates a score using the number of complex words in a text, indicating the years of education required for comprehension.


The Dale-Chall Formula measures readability differently, focusing on a list of common words to evaluate how easily a text can be understood. It’s also called the “Dale-Chall Readability Score” or “Dale-Chall Readability Index”.

Automated Readability Index (ARI)

The ARI focuses on sentence length and character count per word to estimate the education level needed to understand a text. It’s widely known as the “ARI Index” or “ARI Score”.

Coleman-Liau Index

The Coleman-Liau Index, similar to the ARI, uses sentence length and character count per word to estimate the readability of a text. It is often referred to as the “CLI Index” or “CLI Score”.

Linsear Write

The Linsear Write formula takes a different approach, using sentence length and the number of difficult words to estimate the education level needed to comprehend a text.

McAlpine EFLAW

McAlpine EFLAW readability formula employs sentence length, word length, and complex word count to gauge the level of education necessary to understand a text.

In summary, each formula generates a unique score based on specific factors, providing valuable insight into the accessibility of a text. Some formulas, like Flesch-Kincaid, indicate the years of education needed for understanding. Others, like Dale-Chall, highlight the percentage of people who would be able to comprehend the text.

Together, these readability formulas ensure your writing is clear, understandable, and accessible to your intended audience, making them a vital resource for language teachers and anyone wishing to enhance their written communication.

Our Unique Readability Consensus Score

Our readability checker offers something unique – the “readability consensus” score. It’s like getting a second, third, and even fourth opinion all at once. It combines multiple readability scores, giving you a more comprehensive view of how accessible a text is. This consensus score provides a richer understanding of a text’s readability, helping writers make their work more clear and enjoyable for readers.

How to Use Readability Checker?

Go to 猫多芬AI语言平台, paster your text and click on “Analyse”. As simple as that. You can download the results, or modify the text right in the analyser to fit your readers’ level.