Audio BPM & Key Finder

Drop in a track and find its tempo and musical key — useful for syncing cuts, beat-matching edits and picking songs that mix well together. The analysis runs entirely in your browser with the Web Audio API; your audio is never uploaded. Results are an estimate — most accurate on clear, steady-beat tracks (pop, EDM, hip-hop); live recordings, tempo changes and sparse acoustic pieces can fool any detector.

Tap tempo — check it by hand

Tap the button in time with the beat. After a few taps it averages your intervals into a BPM, so you can sanity-check the automatic result.

No taps yet.