How reading time is calculated (and why it is only an estimate)
By the FreeAllTool team · Updated October 28, 2026
Many blogs and news sites show a label like “5 min read” at the top of an article. It helps readers decide whether to start now or save it for later. The number comes from a very simple calculation.
The formula
Reading time is the number of words divided by an average reading speed in words per minute, rounded up. Most sites assume somewhere between 200 and 250 words per minute for adults reading on a screen. With 200 words per minute, a 1,000-word article shows as 5 minutes, and a 1,750-word article as 9 minutes.
Our word counter uses 200 words per minute, which is at the cautious end of the usual range, so most readers will finish in the time shown or a little less.
Why real reading time varies
- Difficulty. Technical, legal or academic text takes longer than a light blog post, even with the same number of words.
- Language. People read their first language faster than a second language.
- Purpose. Skimming a news story is much faster than studying for an exam.
- Images, tables and code. Charts and examples take time to look at, but they add no words to the count.
- Device. Reading on a small phone screen with frequent scrolling can be slower than on a larger screen.
Speaking time is different
If you are preparing a speech or presentation, use a slower rate. Many people speak at roughly 120 to 160 words per minute when presenting clearly, including pauses. A five-minute talk is therefore usually around 600 to 800 words. Practise aloud with a timer to find your own pace.
Should you show reading time?
For long articles, a reading time label can set expectations and reduce the number of people who leave after a few lines because they did not have time. For very short pages it adds little. Whatever you choose, keep the calculation consistent across your site so readers can compare.