How long is
8 bars at 128?

Enter a BPM. Get exact loop lengths and delay/echo times, instantly — no mental math.

BPM

Loop lengths

Assumes 4/4 time — 4 beats per bar

Straight, dotted, and triplet values in milliseconds

Note value	Straight	Dotted	Triplet

Two formulas, both derived straight from BPM.

1 bar

One bar = 4 beats. Beat length is 60 ÷ BPM seconds, so a bar is 240 ÷ BPM seconds. Everything else is that number, multiplied.

A quarter note is 60,000 ÷ BPM in milliseconds. Every other note value is a fraction or multiple of that same number.

×1.5 / ×⅔

Dotted = straight value × 1.5. Triplet = straight value × ⅔. Same trick musicians have used forever, just precomputed.

No counting bars by hand. Drop songs in and every section snaps cleanly to the grid, ready to arrange.