Readability Score Checker
Paste text to get its Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog scores.
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About this tool
All three scores are computed from the same three counts — words, sentences, and syllables per word — using their standard published formulas. Flesch Reading Ease runs roughly 0–100, where higher means easier to read; Flesch-Kincaid Grade Level and the Gunning Fog Index both estimate the US school grade a reader would need to follow the text comfortably. Syllable counts use the same vowel-group estimate as our Syllable Counter — a heuristic, not a dictionary lookup, so scores are a close approximation rather than an exact figure.
Nothing you paste here is sent to a server — the entire tool runs as JavaScript in your browser tab.