Find out why you are slow, not just how slow.

Every typing site gives you a number. This one gives you a reason.

typed correctlymistakestill to comewhere you are

Words per minute tells you where you are, not what to fix. Typerra records the timing of every keystroke you make and reports three things that ordinary typing tests throw away.

01

Rollover

Whether you press the next key before releasing the last one. The strongest behavioural predictor of speed in the research, and no mainstream typing site measures it.

02

Hand transitions

How fast you move between the hands compared with within one hand. Slow typists show a distinctive reversed pattern here.

03

Error types

Wrong letter, missing letter or extra letter. These are not equally bad, and one of them tracks slowness far more closely than the others.

The three metrics and the thresholds used to interpret them come from Dhakal, Feit, Kristensson and Oulasvirta, Observations on Typing from 136 Million Keystrokes, CHI 2018, a study of 168,000 participants. Treat the readings as informative rather than diagnostic: browser key timing is only accurate to a few milliseconds, and one short test is a small sample.

How to use this

  1. Start at Placement 1.1 and work down. Passing a module opens the next one.
  2. Find F and J by the raised bumps and let all eight fingers rest on that row. Every finger returns home after every stroke.
  3. Keep your eyes on the screen. Use the on-screen keyboard while you are learning, then switch it off.
  4. On the results screen, tap any row to see the reasoning behind the number.

How to actually get faster

  • Accuracy before speed, always. Below 95% means you are going too fast, not that you need more practice.
  • Fifteen minutes a day beats two hours on a Sunday. Muscle memory is built by repetition, not duration.
  • Wrong letters mean your fingers are in the wrong place. Missing letters mean you are rushing. They need opposite fixes.
  • Never look down to correct a mistake. Find the backspace by feel, even if it costs you a second.
  • When a module starts feeling easy, repeat it instead of racing ahead.

What began as patient advice from my father, Dr. Md. Jakariya, urging a young boy to learn to type without ever looking down at the keys, became a skill I have leaned on every day since.

Having now lived its value, I built Typerra to pass that same quiet advantage on to someone else.

— Mohammed Fahim Murshed

Dr. Md. Jakariya is a professor at North South University and an adjunct professor at the University of Manitoba.

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