Hobbies: Photo, Music & Garden

Song Length Calculator (Bars and BPM to Time)

Enter the bars, time signature and tempo.

By TheCalcTools Updated Formula checked and tested

Your numbers

Your results

Length
Length
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Seconds
—
Bars for the target length
—
One bar lasts (seconds)
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Song Length Calculator (Bars and BPM to Time) by TheCalcTools

How the Song Length Calculator (Bars and BPM to Time) works

Each bar has a number of beats and each beat lasts 60 ÷ BPM seconds, so length = bars × beats per bar × 60 ÷ BPM.

Use it to plan arrangements, fit a track to a video or estimate set lengths.

The formula

Seconds = bars × beats per bar × 60 ÷ BPM

Worked example

Using the default values shown in the calculator:

Number of bars96
Beats per bar4
Tempo (BPM)120
Target length (seconds, optional)210
  1. 96 bars of 4/4 at 120 BPM last 3:12.
  2. A 3:30 track needs 105.0 bars.

Result:

Length3:12
Seconds192.00
Bars for the target length105.0
One bar lasts (seconds)2.000

Frequently asked questions

How long are 8 bars at 120 BPM in 4/4?

16 seconds.

Sources and further reading

BPM to Milliseconds Calculator (Delay and Reverb Times)Enter the tempo in beats per minute Note Frequency Calculator (Pitch to Hz)Choose a note and octave Time ConverterQuick duration conversions for project planning, uptime and timers Reading Time CalculatorHow many hours is that book, and when will you finish? Guitar Fret Spacing CalculatorEnter the scale length and the fret number

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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.