Compare two tempos and the pitch ratio needed to go between them.
The speed ratio between two tempos also reveals the pitch change a varispeed produces when the two are linked. Matching two songs for a DJ mix means knowing both the tempo gap and the pitch shift that bridging it causes.
Tempo Difference
Ratio = B-BPM / A-BPM; pitch = 12 x log2(ratio)
Ratio = B-BPM / A-BPM; pitch = 12 x log2(ratio) The speed ratio between two tempos also reveals the pitch change a varispeed produces when the two are linked.
Matching two songs for a DJ mix means knowing both the tempo gap and the pitch shift that bridging it causes.
This calculator takes 2 inputs: Tempo A, Tempo B. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.