Beat Detector / BPM Counter

What is Beat Detector / BPM Counter?

The Beat Detector finds the tempo of audio files in beats per minute (BPM). It picks up energy peaks in the waveform through the Web Audio API to pinpoint rhythmic patterns. You can also tap along to any beat manually for a quick BPM reading.

How to use

1. Upload an audio file (MP3, WAV, OGG) or use the tap-tempo button to manually tap along to music playing nearby.
2. For uploaded files, the detector scans the audio waveform for energy peaks and calculates the dominant tempo.
3. View the detected BPM with a confidence indicator, and copy the result or try another track.

Result

You're a DJ preparing a set and need to match tempos. Upload each track to instantly see its BPM — a house track reads 128 BPM, a drum & bass track reads 174 BPM.

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