Calculate readability, in one paste.
Score your writing with the formulas pros use — Flesch, Gunning Fog, SMOG, Dale–Chall and more. No signup. No ads in your face. Just answers.
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- Runs in your browser
- 18 languages
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Plain English for most adults (8th–9th grade).
- Words
- 241
- Sentences
- 14
- Avg words / sentence
- 17.2
- Syllables / word
- 1.48
Instant, in your browser
Calculations run locally as you type — no waiting on a server, no upload of your text.
Privacy-first
Your text never leaves your device. We don't log content, store cookies for tracking, or sell data.
The classic formulas, done right
Carefully implemented — including the canonical Dale–Chall word list and a battle-tested syllable counter.
18 languages
UI in 18 languages including RTL. Each tool tells you which input languages it actually supports.
Most popular
All tools →Flesch Reading Ease Calculator
Classic 0–100 readability score.
Try nowFlesch–Kincaid Grade Level Calculator
U.S. grade level for your text.
Try nowGunning Fog Index Calculator
Penalises complex (3+ syllable) words.
Try nowReading Time Estimator
How long does your text take to read?
Try nowSyllable Counter & Analyzer
Total + per‑word syllable counts.
Try nowSMOG Index Calculator
Health & medical text grade level.
Try nowAll calculators
Readability scores
Flesch Reading Ease Calculator
Classic 0–100 readability score.
Try nowFlesch–Kincaid Grade Level Calculator
U.S. grade level for your text.
Try nowGunning Fog Index Calculator
Penalises complex (3+ syllable) words.
Try nowSMOG Index Calculator
Health & medical text grade level.
Try nowColeman–Liau Index Calculator
No syllables needed — just characters.
Try nowAutomated Readability Index (ARI) Calculator
Character‑based grade level estimate.
Try nowDale–Chall Readability Calculator
Uses the classic 3,000 familiar‑word list.
Try nowFry Readability Graph Calculator
Visual plot — sentences vs. syllables / 100 words.
Try nowRaygor Readability Graph Calculator
Like Fry but using letters per 100 words.
Try nowFORCAST Readability Calculator
For technical / non‑narrative text.
Try nowLinsear Write Readability Calculator
Easy vs. hard word weighting (Air Force origin).
Try nowLIX Readability Calculator
International (Swedish‑origin) index.
Try nowText analysis
Lexical Density Calculator
% content words vs. function words.
Try nowLexical Diversity (TTR) Calculator
Vocabulary variety — type‑token ratio.
Try nowSyllable Counter & Analyzer
Total + per‑word syllable counts.
Try nowPassive Voice Detector
Highlight passive sentences in your writing.
Try nowSentence Length & Variety Analyzer
Sentence length stats and variety score.
Try nowWord Frequency Analyzer
Top words with optional stopword filtering.
Try now