English Readability Analyzer: Flesch, Kincaid & Fog
Inspect English word, sentence and estimated syllable counts with three clearly labeled heuristic readability formulas.
Enabling local controls…
1. Input and options
Runs in page memory, without uploading or saving input. Text input and generated output: 1 MiB UTF-8 each. Copy is explicit; results clear whenever inputs change.
English only; script checks cannot detect language. Abbreviations, names and syllables are approximate. Fog uses all words with at least three estimated syllables, without dictionary exceptions.
2. Result
Enter input or load a sample, then run.
If clipboard access is denied, select the output and copy manually.
How to use this tool
Enter English prose. Review the counts before using Flesch Reading Ease, Flesch–Kincaid Grade and Gunning Fog estimates.
When not to use it
English only; script checks cannot detect language. Abbreviations, names and syllables are approximate. Fog uses all words with at least three estimated syllables, without dictionary exceptions.