Readability Score Calculator for English Text
Check whether article copy, docs, product pages, help content, and learning material are easy to scan. Calculate Flesch Reading Ease, Flesch-Kincaid grade, sentence length, word count, and reading time in the browser.
A readability score calculator estimates how easy English text is to read.
Use it to find long sentences, dense wording, and grade-level issues before publishing.
English drafts
Paste article sections, docs, emails, product copy, or educational content.
Final paragraphs
Scores are more useful when the text includes full sentences and realistic paragraph structure.
Flesch Reading Ease rewards shorter sentences and simpler word shapes. Flesch-Kincaid grade estimates an approximate US school grade level.
Scores are guidance for editing; they cannot judge usefulness, accuracy, audience fit, or search quality by themselves.
Use it for documentation, blog drafts, help center articles, product onboarding, lesson plans, reports, and SEO content briefs.
Pair it with Word Counter and Reading Time Calculator for a fuller editorial check.
Example
A documentation paragraph with many long sentences may show a lower reading ease score.
Assumption
Syllable counts are approximate and the formulas are intended for English prose.
Limitation
The tool does not understand technical correctness, context, intent, or whether the content is helpful.
Is a higher Flesch score better?
Usually, a higher score means easier reading, but the right target depends on audience and topic.
Does this replace editing?
No. It helps spot readability signals, but a human still needs to judge clarity and usefulness.
Does it work with short text?
It can, but scores are more stable with complete paragraphs and multiple sentences.
Does it store my text?
No. The calculations run locally in your browser.
Suggested workflow
Editorial QA path
Clean the draft, measure readability, then estimate reading time before publishing.