Hong Life CalculatorsUnderstanding the reading speed calculator — concept and principle
This calculator measures your reading speed in words per minute, compares it with adult averages from a large meta-analysis, and estimates how long it will take you to finish a book. Students, teachers and avid readers use it to track progress or plan reading time.
How it is calculated
- Words per minute (wpm) = words read ÷ minutes taken.
- Adult averages (Brysbaert, 2019): silent non-fiction 238 wpm (most 175–300), silent fiction 260 wpm (most 200–320), reading aloud 183 wpm.
- Compared with average = your wpm ÷ average.
- Time to finish a book = pages × words per page ÷ wpm.
- Pages per hour = wpm × 60 ÷ words per page.
The principle
Reading speed is simply text divided by time. Marc Brysbaert's 2019 review combined 190 studies and found that adults reading English silently average about 238 words per minute for non-fiction and 260 for fiction, slower than the 300 wpm often quoted. Reading aloud is slower, about 183 wpm, because every word must be spoken. Speed only matters together with understanding: pushing well above your natural rate usually means skimming and remembering less.
Worked example
Default inputs: 1,200 words in 5 minutes 0 seconds, non-fiction read silently, 250 words per page, 300-page book.
- Time = 5 min; speed = 1,200 ÷ 5 = 240 wpm.
- Average for silent non-fiction = 238 wpm; comparison = 240 ÷ 238 = 1.01×.
- 240 is between 175 and 300: within the usual adult range (175–300).
- Book = 300 × 250 = 75,000 words ÷ 240 = 312.5 min = 5 h 13 min.
- Pages per hour = 240 × 60 ÷ 250 = 58.
| Time taken: minutes | Reading speed (words per minute) |
|---|---|
| 1.25 | 960 |
| 2.5 | 480 |
| 3.75 | 320 |
| 5 | 240 |
| 6.25 | 192 |
| 7.5 | 160 |
| 10 | 120 |
How to read the result
Speeds within the usual range are normal; difficult material, an unfamiliar language or a new subject naturally slows anyone down. To measure fairly, time several minutes of continuous reading and count words on a typical page. Comprehension questions after reading tell you more than speed alone.
Common mistakes
- Timing a very short passage, which exaggerates speed.
- Counting words on a page with many short lines of dialogue.
- Comparing reading-aloud speed with silent reading averages.
- Treating very high claimed speeds as normal reading.
Frequently asked questions
What is the average reading speed?
About 238 wpm for silent non-fiction and 260 wpm for fiction in English, according to Brysbaert (2019).
How long will a 300-page book take?
About 5 hours at 240 wpm with 250 words per page.
Is faster reading better?
Only if understanding stays the same; speed alone is not the goal.
Sources: Brysbaert M. (2019), "How many words do we read per minute? A review and meta-analysis of reading rate", Journal of Memory and Language 109:104047