Duration Calculator

128 Bars at 120 BPM

Calculate the exact duration of 128 bars at 120 beats per minute.

128 bars × 4 beats × (60 ÷ 120) seconds per beat

4:16.000

256.000 seconds

All Bar Lengths at 120 BPM

Quick reference for common section lengths

BarsDurationSeconds
1 bars2.000s2.00s
2 bars4.000s4.00s
4 bars8.000s8.00s
8 bars16.000s16.00s
16 bars32.000s32.00s
32 bars1:04.00064.00s
64 bars2:08.000128.00s
128 bars(current)4:16.000256.00s

Related Pages

Other bar lengths at 120 BPM:

4 bars8 bars16 bars32 bars64 bars

More tools:

View 120 BPM ReferenceInteractive Calculator

About This Calculation

At 120 BPM with a 4/4 time signature, each beat lasts 0.5000 seconds. Since there are 4 beats per bar, each bar is 2.0000 seconds long.

Therefore, 128 bars = 128 × 2.0000 = 256.0000 seconds, or approximately 4:16.000.

Common Uses for 128 Bars

  • Full arrangement section in electronic music
  • Loop length for sampling and production
  • DJ mixing cue point reference