Free Reading Time Calculator
Free Reading Time Calculator is a free online tool by US AI. Paste any text and instantly see how long it takes to read at slow (200 WPM), average (240 WPM) and fast (300 WPM) speeds — plus speaking time at 150 WPM. The formula is simple: minutes = words ÷ WPM. It runs completely in your browser — no signup, no download, works on mobile and desktop.
Words: 0 · Formula: minutes = words ÷ WPM · Nothing is uploaded — your text stays on your device.
📖 How to use
- Paste any text — an article, essay, book chapter or speech script — into the box above.
- Pick a reading speed: slow for technical text, average for normal reading, fast for skimming, or speaking for voiceovers.
- The reading time updates instantly as you type or paste.
✨ Why use this tool?
US AI's free reading time calculator online is fast, private and 100% free forever. Writers use it to hit target lengths, students to plan study sessions, and speakers to time scripts. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
How is reading time calculated?
Reading time is calculated with a simple formula: minutes = total words ÷ words per minute (WPM). If the result is under one minute, it is shown in seconds. For example, 500 words at 240 WPM is about 2 minutes 5 seconds.
What is the average reading speed?
The average adult reads about 200–250 words per minute. This tool uses 240 WPM as the "average" setting, with 200 WPM for slow/technical reading and 300 WPM for fast skimming.
How accurate is the calculator?
It is a word-based estimate, so accuracy depends on text complexity and the reader — expect roughly ±10–15%. Dense academic writing takes longer than light fiction at the same word count.
Can I get reading time for a PDF, book or article?
Yes — just paste the extracted text into the box. As a rule of thumb, an 80,000-word book takes about 5.5 hours at 240 WPM. PDF or article text works the same way once pasted.
What about speaking time?
Speaking is slower than reading. Choose the "Speaking · 150 WPM" option to estimate how long a speech, script or voiceover will take — ideal for presentations and videos.