Flesch Reading Ease
A 0–100 score with a plain-language label such as Easy, Standard or Difficult.
SEO TOOL / READABILITY
Free Readability Score Checker
See how easy your writing is to read. Get a Flesch Reading Ease score and grade level, plus sentence length, word length and tips for making your text clearer.
Works for English text. Paste a few sentences and your score appears instantly, privately in your browser.
✓ Free to use · No signup required · Processed in your browser
Readability Score Checker workspace
PASTE ENGLISH TEXT · SEE YOUR SCORE · IMPROVE IT
Grade level—
Avg words / sentence—
Avg syllables / word—
Sentences—
Long words (3+ syllables)—
Reading time—
Paste some English text to see how easy it is to read.
Scores use English-language formulas (Flesch Reading Ease and Flesch–Kincaid Grade). They are a guide, not a verdict — syllables are estimated, so results can vary slightly between tools.
READABILITY WORKSPACEMOSANKIT / SEO & WEBSITE TOOLS
THE BASICS
What Is a Readability Score?
A readability score estimates how easy a piece of text is to read, based on how long its sentences are and how many syllables its words have. The Flesch Reading Ease scale runs from 0 (very difficult) to 100 (very easy); most everyday web content scores between 60 and 70.
Clear writing keeps readers on the page, helps people reading in a second language, and is easier for search engines and AI assistants to summarise accurately.
BUILT FOR THE JOB
Key Features of MoSanKit Readability Score Checker
Grade Level
The Flesch–Kincaid grade shows the US school level needed to understand your text.
Sentence and Word Stats
Average sentence length, syllables per word and the share of long words.
Practical Tips
Spot overly long sentences and get suggestions for simplifying.
Reading Time
Estimated reading time based on 238 words a minute.
Private by Design
Your text never leaves your browser.
QUICK AND SIMPLE
How to Check Readability
01 / PASTE
Paste your text
Add at least a few sentences of English text.
02 / SCORE
See your score
Review the reading ease and grade level.
03 / TIPS
Read the tips
Find long sentences and complex words.
04 / EDIT
Edit and recheck
Simplify and paste again to compare.
MADE FOR EVERYDAY WORK
Who Can Use This Tool?
Content WritersKeep articles clear and scannable.
SEO SpecialistsImprove the quality of page copy.
MarketersMake ads and emails easy to read.
EducatorsMatch text to a student's reading level.
Technical WritersSimplify complex explanations.
StudentsCheck essays and reports.
GOOD TO KNOW
A few things, answered.
Quick answers about using the MoSanKit Readability Score Checker.
60–70 is considered plain English that most adults read easily. Scores above 80 are easy for almost everyone; below 50 is difficult and best suited to specialist readers.
Not always. Your audience matters — a legal or scientific paper can legitimately score lower. Aim for the simplest wording that is still accurate.
No. The formulas are designed for English. For other languages the result is only a rough indication.
Syllables are estimated with a rule-based method, so counts can differ slightly from a dictionary and from other tools.
It estimates the US school grade needed to understand the text. Grade 8 means roughly an 8th-grader could follow it.
No. Everything is calculated in your browser.
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