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Paste your draft, type the keyword, and get the count and its share of all words as you type — plus the ten words you lean on most, with common function words filtered out. No magic percentage is promised, because none exists: the number is for catching yourself repeating, not for hitting a target.
Density is the share of all words the phrase accounts for — a two-word phrase found three times in 300 words is 2%. The old “1–3% is ideal” guidance is folklore, not a published rule: use the number to catch yourself repeating, not to hit a target.
Your ten most-used words land here once there’s text above to rank.
157 common English function words — the, and, of, to and their kin, contractions included — are filtered out before ranking. The percentage is each word’s share of every word in the text, stopwords still counted.
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words
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Flesch Reading Ease — paste a sentence or two to score it
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Flesch–Kincaid grade
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Words per sentence
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Syllables per word
Flesch and Flesch–Kincaid are century-old heuristics tuned for English prose — two averages, sentence length and syllables per word, and nothing else. Scores can land outside 0–100, and a grade below 1 shows as 0. Treat the grade as a compass, not a verdict.
Counting rules, since every analyzer disagrees somewhere: hyphenated words and apostrophes count once; Chinese, Japanese and Korean characters count one word each. Syllables are a heuristic — vowel groups count one apiece, y counts as a vowel, a silent trailing e is dropped unless the word ends in -le, and every word gets at least one. English spelling breaks any rule that short, so expect a miss every hundred words or so. Everything runs in your browser; nothing is uploaded.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
One press puts it on your clipboard, ready to paste where you need it. There is no file to download — the result is text, not a document. Close the tab and nothing of what you pasted remains.