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BPM and Key Finder
Drop in a loop, a stem or a whole song and see its tempo and musical key. Your file stays on your computer: it is measured in this page and never uploaded.
How good is it?
It is an estimate, like the one in a DJ app. Clean loops are usually spot on. Songs with tempo changes, swing or no drums can be off, so check by ear. Half-time and double-time are the same rhythm, so it shows both.
About keys
A minor key and its relative major use the same notes (A minor and C major), so they can be mixed up. We show both. The Camelot code is the number DJs use to mix in key.