AcademyHow WPM Is Calculated: The Formula and TypeTrance's Exact Rules

Words per minute is the number of characters typed, divided by five, divided by the minutes it took. The “word” is a fixed unit of five characters, spaces included, a convention that dates back to the typing competitions of the early 1900s.^{Source 1} On TypeTrance the headline number is corrected WPM, which counts only characters in words you typed exactly right. This page publishes that rule and every other rule behind your results screen; one scoring engine applies them in your browser and, for ranked runs, on our servers.

The formula, with examples

WPM = characters ÷ 5 ÷ minutes

• A 1-minute test: 300 credited characters ÷ 5 ÷ 1 minute = 60 WPM.
• A 30-second test: 150 credited characters ÷ 5 ÷ 0.5 minutes = 60 WPM. Working in seconds, multiply the characters by 12 and divide by the seconds: 150 × 12 ÷ 30 = 60.
• Characters per minute is five times WPM: 60 WPM is 300 characters a minute.

The fixed five keeps long and short words comparable: typing the cat correctly, seven characters with the space, counts as 1.4 words. In English text a character is one letter, digit, punctuation mark or space, and an accented letter such as é counts once, however you typed it.

Corrected WPM: only correct words count

A word earns credit only when you typed it exactly right: all its characters, plus the space after it. A word with a mistake left in it earns nothing, even if most of its letters were right. Two edge cases: the last word of a word-count test has no space after it, and when a timed test ends in the middle of a word, the part you typed counts if every character in it is correct.

The rule is strict on purpose: if correct characters counted one by one, typing the first letter of each word and a space could score well while skipping most of the text. Deleting and retyping never adds credit, and the time spent fixing still counts.

Race it now

60secondsGrand Prix1-minute typing test

Measure your speed and accuracy with the standard one-minute benchmark.

• 1-minute test
• 1,000 common words

Start Grand Prix

Raw, net and corrected WPM

• Raw (gross) WPM counts every character you inserted, right or wrong, kept or later deleted.
• Net WPM has no single definition; tests differ in how they deduct for errors.
• Corrected WPM, TypeTrance’s headline number, counts only correct words, as above.

One run, scored both ways: in a 1-minute test you inserted 330 characters, deleted 19 of them while fixing mistakes, and left two words wrong, 11 characters with their spaces. Raw is 330 ÷ 5 = 66 WPM. The 300 characters left in correct words give 60 corrected WPM. The 30 characters between the two, 19 deleted and 11 in wrong words, are what the mistakes cost.

Accuracy: every attempt counts

Accuracy is the share of your keystrokes that were right at the moment you typed them. Keystrokes you later fixed still count as misses, because accuracy describes how you typed, not how the text ended up; text-entry research counts corrected errors the same way.^{Source 2}

• Backspace is never an attempt, so deleting doesn’t lower accuracy.
• A space is right once you have typed at least as many characters as the word has; a space pressed in the middle of a word is a miss.
• With Letter Lock on, a wrong key that the test refuses still counts as a miss.

In the example above, 314 of the 330 keystrokes were right when typed: 95.15%, shown as 95%.

Timing

• The clock starts with the first character you type, not when the page loads. A space or Backspace pressed before that doesn’t start it.
• Timed tests always divide by the full duration. A 30-second test is measured over exactly 30 seconds, even if your device’s timer fired late or the tab was in the background; input after the deadline is ignored.
• Word-count tests end when the last word is typed exactly, or when you press space on it, and are timed from your first keystroke to that moment.

A standard note on text-entry speed recommends subtracting one character when timing starts on the first keystroke, because the moment spent preparing it isn’t timed.^{Source 1} TypeTrance doesn’t; the difference is 0.2 WPM in a 1-minute test and 0.8 WPM in a 15-second one.

Consistency

Consistency shows how even your speed was from second to second. TypeTrance counts your keystrokes in each full second, skipping the first, which includes your reaction to the start. It takes the coefficient of variation of those counts, cv (their standard deviation divided by their mean), and reports 100 ÷ (1 + cv). Perfectly even typing scores 100%, and the more your speed swings, the lower it goes. A test needs at least four full seconds to have a consistency score.

Top speed, peak word and Rhythm

• Top speed is your fastest stretch of two consecutive whole seconds, corrected for mistakes and read from the second-by-second record of the run. It is a split, not a score.
• Peak word is your fastest correctly typed word of three letters or more, timed from the space before it to the space after it, so the first word never counts.
• Rhythm is experimental. It multiplies accuracy, the steadiness of the gaps between your keystrokes and the share of the test you didn’t lose to pauses (each pause counts beyond its first second). It is a practice signal, never used for rankings, and not a measure of a flow state; see how the experimental Rhythm score is computed.

Display and rounding

Scores are kept to two decimal places and shown rounded down to whole numbers: 89.99 WPM shows as 89, and 99.96% accuracy as 99%, never 100%. Your run’s speed class follows the number you see, so 89 WPM is Flow (70–89 WPM) and 90 is Surge (90–109 WPM); the chart of all ten speed classes and their ranges covers the rest. Rankings compare exact values, never rounded ones.

Comparing and ranking results

Results are compared only under the same conditions: the same test and length, word list or text, rules (such as whether Backspace can return to earlier words) and kind of input, a hardware keyboard or a touch screen. Your personal bests are kept separately for each set of conditions.

Ranked runs add rules: pasting is blocked, the run must be completed, and long idle gaps or irregular timestamps make it ineligible. Because a browser can be modified by its user, no web typing test can prove that a score was typed by a person, so ranked results also go through server-side checks and review before they appear in the standings.