Tap the beat
Tap the big pad along with the music. The tempo shows up after your second tap.
or press the space bar
Tap again
Spread
Tap at least twice to see how steady your taps were.
How it counts
The number is 60,000 divided by the average gap, in milliseconds, between your last taps. It uses at most the last 8 taps. A pause of 2.5 seconds or more starts a new count. Browsers and phone screens add a few milliseconds of delay to each tap, so treat the result as good to a few BPM. Nothing you type or tap leaves this page or is kept.