Readability Score Checker
Paste any text to instantly get Flesch-Kincaid, Gunning Fog, and SMOG readability scores with grade-level explanations.
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Paste text on the left to see readability scores
Flesch Reading Ease
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Score 0–100. Higher = easier to read.
Flesch-Kincaid Grade Level
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U.S. school grade level required to understand this text.
Gunning Fog Index
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Grade level estimate. Scores above 17 are academic-level.
SMOG Index
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Grade level estimate. Most reliable with 30+ sentences.
Text Statistics
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Complex Words
Summary
Paste any text to instantly get Flesch-Kincaid, Gunning Fog, and SMOG readability scores with grade-level explanations.
How it works
- Paste or type your text into the input area.
- The tool counts sentences, words, syllables, and complex words (3+ syllables).
- Four readability formulas are applied to the same statistics simultaneously.
- Each score is displayed with a plain-English interpretation and recommended audience.
- Edit your text and the scores update automatically.
Use cases
- Check whether blog posts or articles are accessible to your target audience.
- Simplify legal, medical, or technical documents for general readers.
- Verify that marketing copy meets readability guidelines for ad platforms.
- Help students and academics calibrate writing complexity for assignments.
- Audit e-learning content to match the reading level of learners.
- Ensure government or compliance documents meet plain-language standards.
- Compare readability before and after editing a draft.
- Benchmark competitor content against your own writing.
Frequently Asked Questions
Last updated: 2026-06-09 ·
Reviewed by Nham Vu