可読性スコア計算機

Analyze Your Text Readability

Check how easy or difficult your text is to read using six established readability formulas. Paste any text — articles, blog posts, emails, or documents — and get instant scores with grade level interpretations.

使い方

Paste or type your text into the input area and click Calculate. The tool analyzes your text using multiple readability formulas and displays color-coded score cards with grade level interpretations and difficulty ratings.

特徴

• Six Readability Formulas – Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG Index, Coleman-Liau, and Automated Readability Index
• Text Metrics – Word count, sentence count, syllable count, character count, and estimated reading time
• Color-Coded Scores – Visual difficulty indicators from very easy (green) to very difficult (red)
• Grade Level Interpretation – Understand what education level your text targets
• Instant Analysis – Results calculated entirely in your browser, no data sent to any server