CleanWordCounter
Multi-Formula Readability Engine

Readability Score Checker

Evaluate text clarity and comprehension levels across 4 industry-standard algorithms: Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, and Coleman-Liau.

Words
0
Avg 0 chars/word
Characters
0
0 no spaces
Sentences
0
0 words/sent
Paragraphs
0
0 sents/para
Reading Time 225 wpm
0 sec
Silent reading
Speaking Time 130 wpm
0 sec
Speech / keynote
GOAL TARGET: No target set
Draft 1
Saved to device memory
Reading Level: Ready

Keyword Frequency & Density

Identify recurring terms and calibrate your SEO phrase balance.

PHRASE OCCURRENCES DENSITY
Type or paste text above to calculate keyword density.
Algorithm Matrix

Understanding the 4 Readability Formulas

Flesch Reading Ease

Calculates ease on a 0–100 scale based on sentence length and syllable count. Scores of 60–70 represent plain English accessible to general readers.

Flesch-Kincaid Grade Level

Translates reading ease into equivalent US school grade levels. An 8.0 indicates an eighth-grade comprehension benchmark.

Gunning Fog Index

Estimates the years of formal education required to understand text upon first reading, focusing heavily on complex multi-syllable words.

Coleman-Liau Index

Relies on characters per 100 words rather than syllables, providing high algorithmic accuracy across programmatic and technical documentation.