Readability Score Calculator
Analyze text readability with Flesch-Kincaid, Gunning Fog, Coleman-Liau, and SMOG scores.
0
Words
1
Sentences
0
Syllables
0
Polysyllabic
About Readability Score Calculator
Readability Score Calculator analyzes text and computes four standard readability indices: Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, Coleman-Liau Index, and SMOG Grade. Each score estimates what education level or grade a reader would need to comfortably understand the text.
Readability matters for SEO, content marketing, and user experience. Google considers user engagement metrics when ranking pages — content that's too dense or complex loses readers faster. Most web content performs best at a 6th–8th grade reading level.
Paste any text to see all scores and a plain-English interpretation of the results.
Features
- ✓Flesch Reading Ease and Grade Level scores
- ✓Gunning Fog, Coleman-Liau, and SMOG indices
- ✓Grade level and plain-English difficulty label
- ✓Word, sentence, and syllable statistics
Common Use Cases
- →Checking content readability before publishing
- →Simplifying complex technical writing for general audiences
- →Ensuring healthcare or legal content meets reading level guidelines
- →Optimizing blog content for broader audience accessibility