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Reaction and speed tests

Reaction time, click speed and typing tests that run in your browser. React to a green screen or five red lights, click as fast as you can for a set time, or type against the clock. All free and nothing to install; results come in milliseconds, clicks per second or words per minute.

Reaction time

Wait for the signal, then respond. Results in milliseconds.

  • Reaction Time

    See how quickly you react to a signal.~30 sec
  • Choice Reaction

    Pick the right square as fast as you can.~1 min
  • F1 Reaction

    Five red lights. React the moment they go out.~1 min
  • Serial Reaction Time

    Hit the lit box. Do your hands learn a pattern you never see?~3 min

Click, spacebar and scroll speed

How many clicks, presses or scroll steps you fit into a set time.

  • CPS Test

    Click as fast as you can for 5 or 10 seconds.~15 sec
  • Kohi Click

    A CPS test with timers from 1 to 60 seconds.~15 sec
  • Jitter Click

    Click by shaking your arm, and see how fast and even it is.~15 sec
  • Butterfly Click

    Click with two fingers in turn and count the clicks.~15 sec
  • Right-Click CPS

    Right-click as fast as you can for 1 to 60 seconds.~15 sec
  • Spacebar Counter

    Press Space as fast as you can for 5 to 60 seconds.~15 sec
  • Scroll Speed

    Spin your mouse wheel as fast as you can.~15 sec

Typing speed

Words per minute, keystrokes per hour, actions per minute, or one run through the alphabet.

  • Typing Speed

    Type common words for 30 seconds, 1 or 2 minutes.~1-2 min
  • Number Typing

    Type numbers and press Enter, 10-key style.~1-5 min
  • Alphabet Typing

    Type A to Z as fast as you can.~10 sec
  • APM Test

    Right actions per minute: keys and clicks.~1 min

Mouse and keyboard checks

These test your hardware, not you.

Which speed test should you take?

For reflexes, start with the Reaction Time Test: five rounds of pressing the moment the screen goes green, averaged to the millisecond. The Choice Reaction Time Test makes you pick the right square first, and the F1 Reaction Time Test copies a race start: five red lights, then go. The Serial Reaction Time hides a repeating pattern in its presses, to see whether your hands learn it before you do.

For clicking, the CPS Test counts your clicks per second over 5 or 10 seconds, the Kohi Click Test offers timers from 1 to 60 seconds, and the jitter and butterfly click tests each measure their own technique. For typing, the Typing Speed Test gives words per minute and the Number Typing Test keystrokes per hour when typing numbers.

What is a good reaction time?

On a test like ours, about 273 ms is typical. That is the middle result on Human Benchmark's browser test, which also times a click on a screen that turns green (read on 2026-10-12). The Reaction Time Test rates your average against it in five bands of its own, and explains why your device adds time to every result.

Why do results differ between devices?

Because your device is part of every measurement. A screen shows a change only when it next refreshes, every 16.7 ms at 60 Hz, and mice and keyboards report to the computer at fixed intervals, every 8 ms at a common USB rate. Wireless devices and some screens add more. Compare results taken on the same device; the methodology page explains the details.