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BPM Detector

Estimate the beats per minute of an audio track using onset detection and autocorrelation. Fully private, runs in your browser.

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Accepted: audio/*

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BPM Detector

Estimate the tempo of any music track. The tool decodes the audio, computes short-term energy windows, detects energy peaks (onsets), then runs interval analysis to find the dominant beat period and converts it to BPM.

How accurate

Results are typically within ±2 BPM for music with a strong, regular pulse. Songs with weak transients, complex rhythms, or rubato may produce lower confidence scores.

Use cases

DJ track preparation
Music library tagging
Sample collection organization
Workout playlist sorting
Songwriting reference