BPM Detector

Estimate tempo from spectral onsets and rhythmic periodicity. Compare half-time and double-time candidates with confidence guidance.

How to use

Upload a rhythmic track. Analyze up to 150 seconds, audition the audio and compare alternate tempos. Correct the BPM manually or use Tap Tempo.

Know the limits

Syncopation, changing tempo, sparse beats and half-time rhythms can be ambiguous. A confidence score is a heuristic, not a guarantee.

Audio is processed on your device. JavaScript is needed to use the tool.