♪Music & Audio calculator

Song Length from BPM and Bars Calculator

Track duration from the number of bars, time signature, and tempo.

Enter number of bars, beats per bar and tempo and get song length (mm:ss) and length in seconds instantly.

InNumber of barsInBeats per barInTempoOutSong length (mm:ss)OutLength in secondsOutTotal beats
3 inputs4 resultsFree no signupPrivate in your browser

Song Length from BPM and Bars Calculator

Fill in the values and the answer updates as you type.

Live
1 Your numbers
BPM
2 Your result

How the Song Length from BPM and Bars Calculator works

Length in seconds = bars × beats per bar × 60 ÷ BPM. Use 4 beats per bar for 4/4 time, 3 for waltz time, and 6 for 6/8 counted in six. Intros, tempo changes, and long reverb tails are not included, so add them if the track has them. Example: with Number of bars 96, Beats per bar 4, and Tempo 120 BPM, the result is Song length (mm:ss) = 3:12; Length in seconds = 192; Total beats = 384.

Inputs and results

The Song Length from BPM and Bars Calculator takes 3 inputs and gives 4 results.

What you enter

  • Number of bars — starts at 96.
  • Beats per bar — starts at 4.
  • Tempo (BPM) — starts at 120.

What you get

  • Song length (mm:ss)
  • Length in seconds
  • Total beats
  • Seconds per bar

Example: Song Length from BPM and Bars Calculator with the starting values

With number of bars 96, beats per bar 4 and tempo 120 BPM, the calculator returns:

Example results
Song length (mm:ss)3:12
Length in seconds192
Total beats384
Seconds per bar2

Change any value above and the results update straight away.

Song Length from BPM and Bars Calculator FAQ

How do I use the Song Length from BPM and Bars Calculator?

Enter number of bars, beats per bar and tempo in the fields, then read song length (mm:ss), length in seconds, total beats and seconds per bar in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.

What does the Song Length from BPM and Bars Calculator calculate?

Track duration from the number of bars, time signature, and tempo. It returns song length (mm:ss), length in seconds, total beats and seconds per bar from the 3 values you provide.

What values does the Song Length from BPM and Bars Calculator start with?

It opens with number of bars 96, beats per bar 4 and tempo 120 BPM so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.

Is the Song Length from BPM and Bars Calculator free and private?

Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.

Can I rely on the Song Length from BPM and Bars Calculator for important decisions?

Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.