Question · Typing and writing speed
How do you convert WPM to keystrokes per hour?
Multiply your words per minute (WPM) by 300 to get keystrokes per hour (KPH). A word is five keystrokes and an hour is 60 minutes, so 40 WPM is about 12,000 keystrokes per hour. The factor assumes one keystroke per character, so corrections and extra keys make a real count higher.
Updated October 16, 20264 min read7 cited facts, each traced to its source
Multiply words per minute by 300 to get keystrokes per hour. A word is five keystrokes, and an hour has 60 minutes, so each WPM is worth 300 keystrokes an hour. At 40 WPM, that is about 12,000 keystrokes per hour 1. The conversion is an estimate, not a measurement. It assumes every keystroke produces one character, so corrections, shift presses and other keys can make a real keystroke count higher.
Our guide to how typing speed is measured sets out the other units, and the overview of typing speed links to every guide in the subject.
The factor is five keystrokes a word, times 60 minutes
Keystrokes per hour (KPH) counts key presses over one hour rather than words. The conversion starts from the five-character word that most typing tests use. At one word per minute, that is five keystrokes per minute, and five times 60 is 300 keystrokes per hour 2. The five-character word is the same convention behind WPM 3, which is why the two units convert with one fixed number.
So the rule is simple. Take the WPM, multiply by 300, and you have the KPH. Any speed works the same way, so a score you read from a plain-text test converts with the same single step.
Two worked examples: 40 WPM and the online average
At 40 WPM, a typist makes about 12,000 keystrokes an hour, which is the figure in the opening answer. The factor works the same at the average speed in a large 2018 online study, which was 51.56 words per minute 4. Multiplying that average by five characters and 60 minutes gives about 15,468 characters an hour 5. That figure counts characters typed, not backspaces, so it approximates the keystroke count rather than measuring it.
The two examples show what the conversion is for. It turns a familiar speed into a volume per hour, which is how data-entry work is often described. It does not tell you how many of those keystrokes were corrections.
Why the factor is an estimate
The factor assumes one keystroke for each character. That holds for plain lowercase letters on a standard layout. MacKenzie's calculation for basic QWERTY gives a keystrokes per character (KSPC) value of 1.0000, because each letter has its own key and each keystroke produces one character 6. The same paper notes that the value rises slightly once shift-key use is counted, so even plain English takes a little more than one keystroke per character.
Corrections push the count further. A backspace is a keystroke that does not add a character, so a typist who makes many corrections presses more keys than the factor predicts. A data-entry test that counts every key press, including corrections, will therefore report a higher figure than WPM times 300. Use that test's own count when you have it.
Input methods change how many keystrokes a word takes
Keystrokes per character is a property of the method, not only of the person. In a 2019 phone study, gesture typing and word prediction were both linked with fewer keystrokes per character 7. The study measured a correlation, not a cause. It suggests that the same words can take fewer key presses when a keyboard helps you, so for the same words, a phone typist who uses prediction may press fewer keys than the factor suggests.
Speech input produces text with no keystrokes at all. For dictation, a keystroke count is not a useful measure, and tracking words per minute is the more direct comparison. Our guide to how dictation compares with typing covers that trade-off.
It depends on what you are measuring
- Keyboard typing of ordinary text. The factor is a good estimate, and the conversion is accurate enough for planning.
- Data-entry tests. Use the test's own keystroke count, because corrections, tabs and extra keys can all count.
- Phone or prediction-heavy typing. Expect fewer keystrokes per word, so the factor overstates the count.
- Dictation. Keystrokes do not apply, so track words instead.
What to do with the conversion
- For a quick estimate, multiply your WPM from a plain-text test by 300.
- For a data-entry job, check whether the employer or test states a keystroke rate, and use that count rather than the factor.
- Compare like with like. A keystroke count is only comparable between runs on the same kind of text and the same keyboard.
- Use a score you trust. The conversion is only as accurate as the WPM it starts from, so check the test's definition first, as explained in our question on how words per minute is calculated.
For the gap between gross and net speed, which also changes what a WPM figure means, read the question on gross vs net WPM. For what the speeds mean in practice, see the question on whether 60 WPM is good and the guide to typing speed for jobs. The unit definitions are in our glossary entries on keystrokes per hour, keystrokes per character and characters per minute.
Evidence
Every number on this page, with where it comes from. Open a fact to see the exact words in its source.
- 1.A typist at 40 words per minute produces about 12,000 keystrokes per hour.
Calculated from 1 other fact
- 2.One word per minute is 300 keystrokes per hour when a word is five keystrokes.
Calculated from 1 other fact
- 3.
- 4.
- 5.
- 6.For the basic QWERTY keyboard, MacKenzie's calculation gives a KSPC of 1.0000, because each letter has its own key and each keystroke produces one character.
I. Scott MacKenzie, Proceedings of the Fourth International Symposium on Human Computer Interaction with Mobile Devices (Mobile HCI 2002), LNCS 2411, Springer, 2002 · Original
- 7.
Go deeper
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