How is net WPM calculated?

Net WPM is calculated using this formula:

Net WPM = (all correct characters ÷ 5 ÷ minutes) − (errors ÷ minutes)

For a 1-minute test, this simplifies to:

Net WPM = Gross WPM − total errors

So if you type at 75 gross WPM with 5 errors in one minute, your net WPM is 70.

Why errors are penalised

In real typing tasks, errors don't disappear — they must be noticed and corrected. The net WPM formula approximates the real cost of errors: the time spent detecting the mistake, pressing backspace, and retyping. A typist producing 80 gross WPM with 10 errors per minute is not delivering 80 WPM of useful output.

Why sites report different WPM scores

Different typing sites use different formulas. Some show gross WPM (no penalty). Some calculate 'word' as exactly 5 characters; others use actual word count. TypingTest.now uses the standard net WPM formula with all characters counted in groups of 5, which tends to produce conservative but honest scores.

Gross WPM vs Net WPM

Your results page shows both gross WPM (raw speed) and net WPM (productive speed). The gap between them reveals your error cost — a large gap means accuracy improvement will have a bigger impact than pushing raw speed.