Free readability tools to check for Reading Levels, Reading Assessment, and Reading Grade Levels.

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Free Readability Tools
Free Readability Calculators

Learn about Readability Formulas:
Dale-Chall Formula
Flesch Reading Formula
The Fry Graph
SPACHE Formula
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Are your documents too hard to read?
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Welcome to ReadabilityFormulas.com, a free website to help you: 1) score your texts (documents, books, policies, technical materials, etc.) and 2) find the reading level and grade level that readers need to read and comprehend your text.

Our Automatic Readability Checker will analyze your text and calculate the number of sentences, words, syllables, and characters in your sample. Our program takes the output of these numbers and plugs them into seven popular readability formulas. These readability formulas will yield the reading level and grade level of your text and help you determine if your audience can read your materials.

Free Readability Text Consensus Tool
Our free readability formulas include:


Use our Automatic Readability Checker now to score any type of text for any grade level.

View all of our Free Readability Calculators to automatically score your text and get the grade level and reading age.


Quick Start Guide:
What Are Readability Formulas and How Do They Help Me?




Free Readability Tests using a List of Familiar Words

Readability Tests using a List of Familiar Words
The majority of readability formulas calculate the grade level of a text using syllable count, word count and sentence length. The exceptions are the Spache Readability Formula and the New Dale-Chall Readability Formula. Both of these formulas compare a graded word list with your text and then calculate a U.S. grade level based on the number of difficult words with average sentence length.

Use our free Dale-Chall Readability Calculator to score any type of text for 4th grade and above. Otherwise, use our free Spache Readability Calculator to score any type of text for 4th grade and below.


Free Readability Tests Using Graphs

Fry Graph and Raygor Graph Text Tool
In addition to the readability text tools above, we have a separate readability calculator called, the Fry Graph and Raygor Graph Text Tool, which will score a sample of your text and visually plot the grade level onto each graph.

The Fry readability formula [ learn more ] measures English texts to provide you with a reading/grade level based on two criteria: 1) the average number of sentences, and 2) syllables per hundred words. We plot these averages onto The Fry Graph to visually show you the grade level of your readers.

Similar to The Fry Graph, The Raygor readability formula [ learn more ] also measures text based on the average number of sentences and letters per hundred words. We plot these two averages on the Raygor Graph to visually show you the reading/grade level of your readers. The Raygor Graph is largely used in secondary education to assess teaching materials and books, whereas The Fry Graph is commonly used on a broader range of texts.


Learn How to Write Better


Learn How to Write Better
Many writers, professionals and amateurs, face the dilemma of writing materials above the reading level of their readers. The best way to write for your target audience is to learn how to make your writing more readable by removing unnecessary words, using more familiar words, and sticking to a shorter sentence length. We invite you to peruse through our many articles on how to write better. Our authors offer you their best writing tips to help you identify and remedy problem areas in your writing and write in plain English—the preferred writing style for a public readership.

Articles: Business Communication - The Good, The Bad, & The Ugly, How to Improve the Readability of Your Writing in 60 Seconds, How to Make Your Press Release Reader-Friendly, How to Write Readable Business Documents in Plain English, Readability Metrics: Are They Getting Your Message? ... [ View All Writing Tips ]