Check how hard your writing is to read before your readers do: the analyzer scores your text with the six standard formulas — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, and ARI — and translates the result into a plain-English verdict. Scores update live as you edit, so tightening a sentence shows its effect immediately.
Everything runs in your browser; nothing you paste leaves the page. For companion metrics, the word counter tracks length and reading time, the keyword density checker covers the SEO side of the same draft, and the case converter fixes capitalization before you publish.
Frequently asked questions
What is a good readability score?
For general audiences aim for a Flesch Reading Ease of 60 or higher — the "plain English" band, roughly 8th-to-9th-grade level. Marketing copy and mass-audience journalism often target 70+. Scores below 30 read like academic papers; that is fine for specialists, costly everywhere else.
What do the six formulas measure differently?
Flesch Reading Ease and Flesch-Kincaid weigh syllables per word and words per sentence. Gunning Fog and SMOG focus on "complex" words of three or more syllables — SMOG is the standard for health-care writing. Coleman-Liau and ARI skip syllables entirely and use letters per word, which makes them stricter on long technical vocabulary. Seeing all six at once stops any one quirk from misleading you.
How accurate is the syllable counting?
Syllables are counted with a vowel-group heuristic plus an exception list — the same approach most readability software uses. Individual unusual words can be off by one syllable, but the formulas average over the whole text, so scores are stable for anything longer than a couple of sentences.
How much text do I need for reliable scores?
The formulas were designed for passages of 100+ words, and SMOG formally expects 30 sentences. The tool will score anything down to a single sentence, but treat results for very short texts as a rough signal, not a grade.
Is my text uploaded for analysis?
No — sentence splitting, syllable counting, and every formula run in your browser. Nothing you paste is transmitted, logged, or stored, so drafts and confidential documents are safe to check.