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無料で高速、プライバシー重視のテキスト分析ツール。読みやすさスコア、音節カウント、受動態検出、読了時間など。登録不要、ミリ秒で結果表示。
読みやすさスコア
Flesch Reading Ease Calculator
Classic 0–100 readability score.
今すぐ試すFlesch–Kincaid Grade Level Calculator
U.S. grade level for your text.
今すぐ試すGunning Fog Index Calculator
Penalises complex (3+ syllable) words.
今すぐ試すSMOG Index Calculator
Health & medical text grade level.
今すぐ試すColeman–Liau Index Calculator
No syllables needed — just characters.
今すぐ試すAutomated Readability Index (ARI) Calculator
Character‑based grade level estimate.
今すぐ試すDale–Chall Readability Calculator
Uses the classic 3,000 familiar‑word list.
今すぐ試すFry Readability Graph Calculator
Visual plot — sentences vs. syllables / 100 words.
今すぐ試すRaygor Readability Graph Calculator
Like Fry but using letters per 100 words.
今すぐ試すFORCAST Readability Calculator
For technical / non‑narrative text.
今すぐ試すLinsear Write Readability Calculator
Easy vs. hard word weighting (Air Force origin).
今すぐ試すLIX Readability Calculator
International (Swedish‑origin) index.
今すぐ試すテキスト分析
Lexical Density Calculator
% content words vs. function words.
今すぐ試すLexical Diversity (TTR) Calculator
Vocabulary variety — type‑token ratio.
今すぐ試すSyllable Counter & Analyzer
Total + per‑word syllable counts.
今すぐ試すPassive Voice Detector
Highlight passive sentences in your writing.
今すぐ試すSentence Length & Variety Analyzer
Sentence length stats and variety score.
今すぐ試すWord Frequency Analyzer
Top words with optional stopword filtering.
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