Readability Score Calculator
Paste text and instantly calculate common readability metrics and grade-level estimates.
Flesch Reading Ease
42.60
Flesch-Kincaid Grade
9.55
Gunning Fog
12.49
SMOG
11.21
Words
18
Sentences
2
Syllables
33
Complex Words
4
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Which readability formulas are included?
This calculator includes Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, and SMOG.
What does a higher Flesch score mean?
A higher Flesch Reading Ease score usually means the text is easier to read.
Can I use this for SEO content?
Yes. Readability scoring helps you simplify content for broader audiences and better on-page experience.
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