Bar Duration in 4/4 at 100 BPM
A 4/4 bar at 100 BPM lasts 2.4 seconds.
How to use this tool
- Enter bpm, beats per bar and beat unit in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your seconds per bar and the full breakdown beneath it.
At 100 BPM in 4/4, each bar spans 2.4 seconds — useful for aligning audio clips and video edits.
Frequently asked questions
- How long is a bar at 120 BPM in 4/4?
- At 120 BPM each quarter note lasts 0.5 s, so a 4-beat bar lasts 2.0 s (2000 ms).