The Flesch-Kincaid Readability Score Explained
Whether you are writing a landing page or an internal company memo, your writing is useless if your audience cannot understand it. A Readability Analyzer applies the Flesch-Kincaid algorithm to objectively score your text.
How the Formula Works
The Flesch Reading Ease score relies on two core metrics:
- Sentence Length: The average number of words per sentence.
- Word Complexity: The average number of syllables per word.
The formula mathematically punishes long, winding sentences and multi-syllabic vocabulary.
Interpreting the Score
The score outputs on a 0-100 scale. Higher scores indicate easier reading.
- 90-100: Very easy to read. Easily understood by an average 11-year-old student.
- 60-70: Standard. Easily understood by 13- to 15-year-old students. This is the optimal target for mass-market copy, journalism, and B2B marketing.
- 0-30: Very difficult to read. Best understood by university graduates. Typical of academic papers and legal contracts.
How to Improve Your Score
If your score is below 50 and you are writing for a general audience, you must simplify:
- Break compound sentences into two distinct sentences.
- Swap complex, multi-syllable jargon for simple alternatives (e.g., use "use" instead of "utilize").
- Embrace active voice over passive voice.