CalculatorCast

読書時間計算機

任意のテキストの推定読了時間を算出します。

はじめに

Reading Time Calculator — Estimated reading time for any text. Enter Text, Reading speed (words/min) to get an instant, accurate result.

計算式

Reading time (minutes) = word count / reading speed (words per minute).

ステップごとの説明

  1. Enter the Text.
  2. Enter the Reading speed (words/min).
  3. Click Calculate to see your result instantly.

実例

Example: With Reading speed (words/min) = 250, the Reading Time Calculator gives Words: 90, Minutes: 0.36, Seconds: 21.6.

よくある質問

What reading speed should I use?
250 words per minute is a commonly used average for adult silent reading.
How is word count determined?
By splitting the text on whitespace and counting the resulting chunks.
What inputs does the Reading Time Calculator need?
You'll need to provide: Text, Reading speed (words/min). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Reading Time Calculator?
The Reading Time Calculator applies the formula exactly as calculated — Reading time (minutes) = word count / reading speed (words per minute). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Reading Time Calculator free to use?
Yes, the Reading Time Calculator is completely free, requires no signup, and runs instantly in your browser.

読書時間計算機について

The Reading Time Calculator uses a real, verifiable formula — Reading time (minutes) = word count / reading speed (words per minute). — so results are accurate every time, not an approximation.