Reaction Time Test

Wait for the signal, click as quickly as possible, and track average and best reaction time locally.

Trials

Random wait

—Latest ms

—Average ms

—Median ms

—Best ms

0 / 5 trialsFalse starts: 0

This is a browser input-timing game, not a medical or neurological assessment. Display latency, device input lag, and browser scheduling affect the measured time.

How to use this Reaction Time Test

Test visual reaction time in milliseconds with repeated trials. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.