About this tool
You are listening to a song and want to know how fast it is – for a DJ set, for practising, for a matching delay or to set up a track in your DAW? With the BPM tapper you simply tap along in time and see the tempo in beats per minute from the second tap on.
The tempo comes from a least-squares line through all taps, so single early or late taps barely matter. The tool also shows the median tempo, the last interval, your timing deviation and half and double tempo. You can take the result straight to the Online Metronome or the BPM Calculator. Everything runs locally in your browser; nothing is recorded or sent anywhere.
How it works
- Play the music and tap the large pad in time – or press Space or T.
- Keep tapping for a few bars until the deviation is small and the tempo hardly changes any more.
- Copy the rounded tempo or open it in the metronome or BPM calculator. After a five-second pause (adjustable) or when you press R, the measurement goes into the history and the next one starts.
Frequently asked questions
How often do I need to tap?
Two taps give a first value; it becomes reliable after about 8 to 16 taps. The longer you tap, the less small inaccuracies matter. The deviation shows how evenly you tapped.
Why do tempo and median tempo differ?
The main tempo is the slope of a least-squares line through all taps; the median tempo comes from the middle interval between two taps. With even tapping both are almost the same; if they are far apart, one tap was clearly off.
What does “Average over: Last 8” do?
By default every tap since the last reset counts – ideal for songs with a fixed tempo. If the tempo changes, for example in live recordings, “Last 16” or “Last 8” only uses the most recent taps so the value follows faster.
I measure 70 BPM but the song is 140 – why?
Whether you tap on every beat or every other one is a matter of feel – especially with hip-hop, drum & bass or dubstep. That is why the tool also shows half and double tempo.
Is the music recorded?
No. The BPM tapper uses neither the microphone nor any audio, only the times of your taps – and they stay in your browser.
How does the history work?
As soon as you stop tapping for longer than the pause setting (5 seconds by default, adjustable from 1 to 60) or press R or “Reset”, the measurement is saved with time, tempo, number of taps and deviation. That way you can measure several songs in a row. The last 20 measurements are kept in your browser’s local storage and can be cleared at any time.