Reading Speed Calculator
Written by Thierno Sadou Diallo, formula verified per our methodology • Last checked on 9/5/2026
Reading speed is calculated as words per minute = number of words ÷ (time in seconds ÷ 60). Reading 300 words in 2 minutes corresponds to a speed of 150 words per minute, close to the average for an adult reading silently.
Explanation
Measuring your reading speed simply means counting the number of words read over a timed period, then scaling that count to a one-minute basis to get a rate that's comparable from one reading to another. The average silent reading speed for an adult generally falls between 150 and 250 words per minute depending on the text's difficulty, while reading aloud is almost always slower, around 120 to 150 words per minute, since it's constrained by articulation speed rather than comprehension speed alone. This measurement is useful for tracking your own progress in speed reading, estimating the time needed to finish a book or document (by dividing its total word count by your own speed, a calculation similar to our rule of three calculator), or following the development of reading fluency in a child who is learning to read. It's important to keep in mind that a high speed is only a useful indicator if it comes with good comprehension of the text: reading quickly through a text you don't understand provides no real benefit, contrary to what some 'speed reading' methods suggest by prioritizing raw speed over comprehension.
Example: reading a 300-word article
Inputs
Number of words read: 300. Timed reading duration: 120 seconds (2 minutes).
Calculation
Speed = 300 ÷ (120 ÷ 60) = 300 ÷ 2 = 150 words per minute.
Result
This reading was done at 150 words per minute, an average silent-reading speed for an adult.
Frequently asked questions
What is a good reading speed?
There's no universally 'good' speed: an average adult reads silently between 150 and 250 words per minute with good comprehension, but this speed varies a lot depending on the text's difficulty, familiarity with the subject, and the purpose of the reading (skimming a document quickly versus studying it in depth). A technical text or one in a foreign language is naturally read more slowly than a familiar novel, without that indicating a problem. To track progress over time, our percentage calculator lets you directly express a speed gain (for example from 150 to 180 words per minute) as a percentage improvement.
How do I precisely count the number of words in a text?
Most word processors (document statistics) and many online tools automatically count the number of words in a pasted text. For printed text, a quick estimate is to count the words on a few representative lines, calculate an average per line, then multiply by the total number of lines.
Does fast reading sacrifice comprehension?
Reading science research shows that beyond a certain threshold, speed and comprehension do trade off against each other: techniques that promise to multiply reading speed by 3 or 4 while keeping comprehension intact are not supported by the scientific literature. A reading speed only becomes truly useful when measured together with a comprehension test on the content read.