Guides JP

Reading Time Calculator

Enter text to estimate how long it takes to read, based on character and word counts in real-time.

Last updated: 2026/10/16 Text Feedback & bug reports
Input
Reading Style
500 chars/min
Estimated Reading Time
—
0 Chars / Words
500 Reading Speed
— Basis

Reading Speed Reference

  • Japanese silent: 400–600 chars/min
  • Japanese aloud: 300–400 chars/min
  • English silent: 200–250 words/min
  • English aloud: 130–160 words/min

How to Use

1

Enter Text

Type or paste the text you want to measure into the text area.

2

Choose Style & Speed

Switch between silent and aloud, and adjust the reading speed with the slider. Choose "Aloud" for presentations.

3

Check Reading Time

The estimated reading time updates in real-time as you type. Copy it for your documents.

About the Reading Time Calculator

A web tool that estimates how long it takes to read a piece of text based on its character and word counts. Japanese is calculated from characters per minute, English from words per minute. Silent reading and reading aloud have different speeds, so you can switch between them—handy for planning the timing of speeches and presentations. All processing happens in your browser, and your text is never sent to any server.

Features

  • Real-time CalculationReading time is calculated instantly as you type, with no waiting.
  • Silent & Aloud ModesSwitch speed by reading style—great for gauging presentation and speech timing.
  • Adjustable SpeedFine-tune reading speed with a slider to match your own or your readers' pace.
  • Privacy ProtectedAll processing runs in your browser. Your input text is never sent to a server.

Use Cases

  • Add "X min read" labels to blog posts and articles
  • Check the duration of presentation and speech scripts
  • Estimate the length of video narration and voice-over scripts
  • Set reading-time guides for study materials and reports
  • Gauge readability of newsletters and long social posts

FAQ

How is reading time calculated?
Japanese uses "characters ÷ characters per minute" and English uses "words ÷ words per minute." You can freely adjust the reading speed with the slider.
How much does reading aloud differ from silent reading?
Reading aloud generally takes longer. Silent reading is around 200–250 words/min in English, while reading aloud is about 130–160 words/min. The tool changes the default speed automatically when you switch styles.
Can I use it for presentation or speech timing?
Yes. Paste your script and select "Aloud" to see how long it would take to read out loud—useful for adjusting your speaking time.
Can it measure text that mixes Japanese and English?
In "Auto-detect" mode, the basis switches depending on whether Japanese characters are present. To force a specific basis, manually choose "Japanese (characters)" or "English (words)."
Is my text saved anywhere?
No. Your text is never sent to or stored on our servers. All calculations happen locally in your browser, so you can use it with peace of mind.
Is it free to use?
Yes, it is completely free. No registration or installation required—just open it in your browser.

Related Tools

Character Counter Count characters, words, and lines in real-time Fullwidth/Halfwidth Converter Convert between halfwidth and fullwidth characters Text Replace Tool Find and replace text with regex support Text Diff Checker Compare two texts and highlight differences Mojibake Fixer Auto-detect and fix garbled text encoding

Popular Tools

JSON Formatter Format and validate JSON with syntax highlighting QR Code Generator Create custom QR codes with logo, colors & styles Password Generator Generate secure random passwords with one click Base64 Encoder Encode and decode text or files to Base64 IP Address Checker Check your global IP address Percent Calculator Calculate percentages easily

Related Guides

How to Count Characters: 400-Char Manuscript Pages, SNS Limits, Spaces & Line Breaks Learn how to count characters correctly: converting to 400-character manuscript pages, character thinking for social media, reports and SEO, and how spaces, line breaks, and full-width vs half-width characters are counted.