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Music Duration Calculator

Find the length of a passage from bars, time signature and tempo.

Calculated Output

Duration 64

Duration (min:sec) 1:04

Formula: seconds = bars * beats per bar * 60 / BPM

Step-by-Step Breakdown

1. Values used:

2. Number of bars = 32

3. Beats per bar = 4

4. Tempo = 120 BPM

6. Duration = 64

7. Duration = 1:04

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The math behind it

duration = bars x beats per bar x 60 / BPM.

32 bars of 4/4 at 120 BPM lasts 64 seconds.

How does tempo change it?

Higher BPM means each beat is shorter, so the piece is faster and shorter.