Reading Level Analyzer

A reading level analyzer is a tool that measures how difficult a piece of text is to read and understand. It applies mathematical formulas to factors like sentence length, word length, and syllable count to produce a score that corresponds to a school grade level or a general difficulty rating. Our reading level analyzer computes all five major industry-standard scores simultaneously so you get a complete picture of your text's readability.

1. Paste or upload your text — drop any plain text, article, essay, or document into the input area. The analyzer accepts text of any length.
2. Instant browser-based analysis — the reading level analyzer tokenizes your text into words, sentences, syllables, and paragraphs entirely in your browser. No data is ever sent to a server.
3. Review your scores — five color-coded score cards appear immediately, each with a grade level label and a plain-English interpretation.

• Flesch Reading Ease— scores text on a 0–100 scale. A score of 60–70 is considered plain English, suitable for most general audiences. Scores above 80 are very easy (children's books); scores below 30 are extremely difficult (academic journals).
• Flesch-Kincaid Grade Level — converts the Flesch formula into a US school grade level. A score of 8 means the text is readable by an average 8th grader. This is the most widely used readability metric in the United States.
• Gunning Fog Index— estimates the years of formal education needed to understand the text on first reading. It penalizes "complex words" — words with three or more syllables. A score of 12 corresponds to a high school senior.
• SMOG Index — Simple Measure of Gobbledygook. Developed for healthcare communication, it is considered the most accurate formula for predicting comprehension. It is most reliable for texts with 30 or more sentences.
• Coleman-Liau Index — unlike the other formulas, it uses characters per word rather than syllables, making it more consistent across different languages and text types. It is particularly useful for digital text where syllable counting may be less reliable.

• Shorten your sentences — aim for an average of 15–20 words per sentence. Break long sentences into two shorter ones.
• Use simpler words— replace multi-syllable jargon with everyday alternatives where possible. "Use" instead of "utilize"; "help" instead of "facilitate".
• Add paragraph breaks — shorter paragraphs reduce cognitive load and improve perceived readability even when the score stays the same.
• Know your audience — a Grade 12 score is perfectly appropriate for a legal contract or academic paper. The goal is to match the reading level to your intended reader, not to minimize the score at all costs.