Typing speed is usually measured in Words per Minute, WPM.

Words per Minute is calculated using Standard Word Length where five keystrokes, including spaces and punctuation, make one word.

For example, the three word sentence "She likes elephants!" counts as four standard words as it takes 20 keystrokes to type.

The five keystroke standard word is used in all typing tutors and typing tests to give comparable results.

Typing speed can also be measured in Keystrokes per Minute, KPM (also called Characters per Minute, CPM). Data entry speed is often measured in Keystrokes per Hour, KPH.