Free tool · Rhythm

Delay Calculator

Delay and reverb times locked to your tempo. The dotted 1/8 is the classic trance lead delay.

Tap the button in time with your track. Four taps or more gives a steady reading.

Delay times

Milliseconds, with the matching LFO rate in Hz. Click a value to copy it.
NoteStraightDottedTriplet

Reverb starting points

SettingValueWhy

How tempo-synced delay works

One beat lasts 60,000 ÷ BPM milliseconds. At 138 BPM that's about 434.8 ms for a quarter note. Halve it for an eighth (217.4 ms), and multiply by 1.5 for a dotted note: a dotted eighth at 138 BPM is 326.1 ms.

Dotted 1/8 on leads gives the rolling, galloping echo that fills the gaps in a trance melody. Straight 1/4 or 1/8 on plucks keeps things tight. Triplets add a swung, off-grid feel that works well on breakdown pads.

The Hz column is the same timing as a frequency, useful for setting an LFO or tremolo to move in time without a sync button.