Readability Score Calculator
Measure Flesch Reading Ease and approximate grade level of any English text instantly.
About Readability Score Calculator
Readability formulas turn the vague question of whether text is too hard to read into a number. Whether you write for a general audience or a technical one, knowing the Flesch Reading Ease score and grade level reveals whether the text matches the readers you expect.
The tool measures Flesch Reading Ease on its 0-100 scale and the Flesch-Kincaid grade level based on sentence length and syllables per word. Paste any English text and both scores appear instantly, giving you a concrete benchmark to improve against.
Marketers checking landing page copy, teachers gauging whether a text suits a grade level, and technical writers simplifying documentation all use it. Journalists and content teams aiming for plain English use it to keep articles accessible.
How to Use
- Paste the text you want to analyze.
- Press Calculate Readability.
- Review the Flesch Reading Ease score and grade level.
Example
"The quick brown fox jumps over the lazy dog." Flesch Reading Ease ~82 (Easy) · Grade ~5
Short words and sentences score highly on readability. Scores above 80 are considered easy to read for most audiences.
FAQ
What is the Flesch Reading Ease score?
A score from 0-100 where higher means easier to read. 90-100 is very easy; 0-30 is very difficult.
What is the grade level?
The Flesch-Kincaid grade level approximates the US school grade needed to understand the text.
What score should I aim for?
General web content should target 60-70 (plain English); marketing copy often targets 80+ for broad audiences.
How does sentence length affect the score?
Longer sentences lower the reading ease score, because each one adds complexity for the reader. Splitting long sentences into shorter ones is the fastest way to raise a low score.
Is the score affected by word choice alone?
Both matter. The scores come from sentence length and syllables per word, so short, common words combined with shorter sentences together produce the easiest-scoring text you can aim for.