Key Repeat Rate Test

Hold a key to estimate the initial repeat delay, average repeat interval, and repeat events per second.

Hold any key

Keep the key held until several repeat events arrive.

—Initial repeat delay ms

—Repeat events/sec

—Mean repeat interval ms

0Repeat intervals

Results reflect browser KeyboardEvent auto-repeat timing. Operating-system repeat settings and browser scheduling affect the values.

How to use this Key Repeat Rate Test

Measure browser-observed keyboard auto-repeat delay and repeated keydown frequency. 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.