Readability Analyzer
0 B · 0 lines Reading time: 0 min
Input text
Readability analysis
0.28 ms
Overall readability
Very Difficult

Highly dense text. Rewrite for clarity before publishing widely.

Words
0
Sentences
0
Syllables
0
Reading age
—
Readability formulas
  • Flesch Reading Ease
    Higher is easier to read.
    0.00
  • Flesch-Kincaid Grade
    Estimated U.S. school grade level.
    0.00
  • Gunning Fog
    Complexity based on sentence and word difficulty.
    0.00
  • Coleman-Liau Index
    Readability from characters and sentence density.
    0.00
  • SMOG
    Reading grade estimate from polysyllabic words.
    —
Paragraphs: 0
Complex words: 0
Avg words/sentence: 0.00
Avg syllables/word: 0.00
Characters: 0
Letters: 0
0 B · 0 lines Reading time: 0 min
Input text
Readability analysis
0.28 ms
Overall readability
Very Difficult

Highly dense text. Rewrite for clarity before publishing widely.

Words
0
Sentences
0
Syllables
0
Reading age
—
Readability formulas
  • Flesch Reading Ease
    Higher is easier to read.
    0.00
  • Flesch-Kincaid Grade
    Estimated U.S. school grade level.
    0.00
  • Gunning Fog
    Complexity based on sentence and word difficulty.
    0.00
  • Coleman-Liau Index
    Readability from characters and sentence density.
    0.00
  • SMOG
    Reading grade estimate from polysyllabic words.
    —
Paragraphs: 0
Complex words: 0
Avg words/sentence: 0.00
Avg syllables/word: 0.00
Characters: 0
Letters: 0

Readability Analyzer

Analyze text readability with Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, Coleman-Liau, and SMOG. Get sentence complexity and reading-age insights instantly in your browser.

Readability Analyzer Use Cases

  • Assess docs, onboarding flows, and help center articles before publishing
  • Compare multiple draft versions and pick the clearest copy
  • Optimize product microcopy and in-app guidance for broader audiences
  • Spot dense sections in technical documentation and simplify them

Readability Analyzer FAQ

Which readability formulas are included in this analyzer?

The analyzer includes Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, Coleman-Liau, and SMOG, along with supporting text complexity metrics.

Why can the SMOG score be unavailable for short texts?

SMOG is statistically more reliable with at least 3 sentences. For shorter inputs, the tool shows a warning instead of an unstable score.

Does readability analysis run locally or on a server?

Everything runs locally in your browser. Your text is never uploaded to any server.