HOW IT WORKS
Five fair rounds
- 1Click or press Space to arm a round.
- 2Wait until the surface turns green.
- 3React instantly — a premature action cancels the round.
- 4After five counted rounds, see average, best and each round.
SKILL TEST
Reaction Time Test
Wait for the green signal, then click or press Space. Five counted rounds produce your average and fastest times.
1 / 5 roundsReady when you are
Five timed rounds. If you click or press Space before the green signal, that round is not counted — just wait and try again.
WHY A RANGE
You see a baseline
- Consistency across rounds matters as much as one fast click.
- Your best round shows peak, not your steady performance.
- Results stay in this tab; nothing is uploaded.
LIMITATIONS
What this test cannot prove
Reaction time measured in a browser includes your display latency, operating system, input device and browser event pipeline. It is an informal exercise, not a medical, cognitive or hardware benchmark.
REACTION FAQ
Useful answers before testing
What does the average reaction time mean?+
It is the simple arithmetic mean of your five counted rounds. Your fastest round shows your raw speed when conditions line up.
What happens if I click too early?+
A click or Space press before the green signal cancels that round and it is not counted. Just wait for the green signal and advance again.
Is this a diagnostic test?+
No. It is an informal browser exercise for practice and comparison. Browser event timing includes the display, operating system and input device.
Why can results feel slower than I expect?+
Total latency is the sum of your display, GPU pipeline, browser and input device — not just your nervous system response.