Reading & Speech Time Calculator
Calculate the time needed for speeches and blog posts from character count.
Includes a teleprompter (auto-scroll) feature for reading practice.
⏱️ Results
📺 Teleprompter (Auto-Scroll Reading Practice)
About
An online tool that calculates the reading speed of a text in Japanese and English (WPM/CPM). By simultaneously counting the number of characters and excluding spaces, you can understand the length of the content from multiple angles.
Ideal for creating content that is conscious of readers' time, such as blog articles, presentation materials, and e-mail newsletters. Calculate the time required at speaking speed from the manuscript, and use the built-in teleprompter function to seamlessly practice reading aloud.
All processing is completed within the browser and the data you enter is never sent to the server. You can use it to calculate confidential manuscripts with confidence, without worrying about it being leaked outside the company.
How to Use
Enter text
Paste or enter the text you want to measure in the text area.
Check real-time results
Reading time and number of characters are calculated and displayed in real time as you type. You can choose the speed from the presets according to your purpose (speech, reading, etc.).
Practice with a teleprompter
Press "Start" on the prompter at the bottom of the page and the text will automatically scroll at the speed you specify. You can practice the actual performance or recording while reading the screen.
Glossary
- Estimated Reading Time
- The projected duration required for a human to read a piece of text entirely. Adding this metric at the top of articles heavily increases user retention and engagement.
- WPM (Words Per Minute)
- The standard measurement metric for reading speed in languages separated by spaces like English. The average adult reads between 200 and 250 WPM.
- CPM (Characters Per Minute)
- The standard measurement metric for logographic languages like Japanese or Chinese, where counting words is difficult because there are no spaces between them.
- Silent Reading
- Reading in your head. This is the default scenario the tool assumes, applying a baseline of around 220 WPM for maximum accuracy for average internet users.
- Reading Aloud (Speech)
- Speaking the text verbally. It is significantly slower than silent reading. Usually around 130 to 150 WPM. Essential setting when estimating podcast or speech scripts.
- Non-blocking JS Calculation
- The technology ensuring that the time updates continuously in real-time as you physically type, without freezing your web browser or requiring button clicks.
- SEO Dwell Time
- The amount of time a visitor spends on a page before returning to search results. Promising a "3 min read" up-front psychologically reduces bounce rates.
FAQ
- Q.How does this tool define the default 200 WPM reading speed?
- Extensive linguistic studies indicate that average English-speaking adults process written prose efficiently at approx 200-250 WPM. 220 is the universally accepted standard for web publishers.
- Q.How can I calculate time for my podcast/speech script?
- Since speaking out loud is significantly slower due to physical articulation, you must adjust the "Reading Speed" slider down to roughly 130 - 150 WPM to get an accurate speech duration.
- Q.Can I copy-paste a confidential business contract to check its length?
- Yes, with absolute peace of mind. All logic runs directly on your local device via JavaScript. No data payloads of your pasted text are ever transmitted to any backend servers.
- Q.Does it work for Japanese or Chinese text?
- Yes. Simply toggle the Language mode in the settings to "Japanese/Chinese (Character-based)". It will switch calculating from Words to Characters (approx 400-600 characters per minute).
- Q.Why do other tools give me slightly different times?
- Different tools utilize slightly differing baseline algorithms. Some assume a 200 WPM speed, some 250 WPM, and some fail to subtract punctuation logic. Our slider gives you full control.
- Q.Does it count spaces as words/characters?
- In Word-mode, spaces act merely as separators. In Character-mode, spaces are intelligently ignored if you check the specific settings box, preventing inflated reading times.
- Q.Can I use this on a mobile browser?
- Functionality is unconditionally supported across modern mobile browsers (Safari/Chrome on iOS and Android) without sacrificing real-time calculation speeds.
Use Cases
Preparation for speech/presentation
Estimate the actual speaking time from the amount of manuscript. If you use the "time specification" function, you can count back the number of characters required for a 5-minute speech, making drafting smoother.
YouTube video/narration recording
Estimate the length of the video when creating the manuscript. When recording, the built-in teleprompter allows you to smoothly record commentary while looking at the camera.
Blog article UX optimization
The "reading time (approximately 0 minutes)" of the article is written at the top of the page and used for calculations to reduce reader withdrawal rate (improve UX).
Greetings for weddings and ceremonies
Even for speeches where "pauses" are important, you can figure out the appropriate time just by selecting the dedicated preset (270 characters/minute).