Reading Level Checker
Score your text live with six classic readability formulas: Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and ARI.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the readability checker as a general reading level test — paste your text and six classic scores update live with every keystroke.
Instead of trusting one number, you see Flesch Reading Ease next to five grade-level formulas (Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI). When several formulas agree on a grade, that consensus is a far more reliable reading level than any single score.
You also get average sentence length, average word length and your three longest sentences — the quickest levers for lowering the level. The formulas are English-calibrated, so for other languages compare drafts rather than quote absolute grades; everything runs privately in your browser.
Example. The cat sat on the mat. is counted as 6 words and 1 sentence, and Flesch Reading Ease is clamped to 100 because the raw score sits above the scale.
Limit. Syllables are vowel groups plus a silent-e rule, so the six English formulas are not recalibrated for other languages.