Audio Track Length Calculator

Work out audio track length instantly with clear inputs, formula shown and shareable results.

About Audio Track Length Calculator

Total beats are bars times beats per bar, and duration is those beats divided by tempo in beats per minute, converted to seconds. Producers work in bars while broadcasters work in seconds, so this conversion is what lets a 64 bar arrangement be trimmed to an exact 30 second edit.

Formula

Duration

seconds = bars x beats per bar x 60 / tempo

Worked example

With the default values below, Audio Track Length Calculator returns Track length of 120.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Number of barsminimum 1: 64
Tempominimum 1 bpm: 128 bpm
Beats per barminimum 1: 4

Results

Track length: 120.00 s
Length as minutes and seconds: 2:00
Total beats: 256
Length of one bar: 1.875 s

Step by step

1Values used
2Duration
3Track length= 120.00 s
4Length as minutes and seconds= 2:00
5Total beats= 256
6Length of one bar= 1.875 s

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Audio Track Length figure worked out?

seconds = bars x beats per bar x 60 / tempo. Total beats are bars times beats per bar, and duration is those beats divided by tempo in beats per minute, converted to seconds.

Why does this matter?

Producers work in bars while broadcasters work in seconds, so this conversion is what lets a 64 bar arrangement be trimmed to an exact 30 second edit.

What do I need to enter?

Enter number of bars, tempo, beats per bar. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.