180 BPM dotted eighth — 250 ms

At 180 BPM a dotted eighth lasts 250 ms. One beat is 333.33 ms and a bar is 1333.33 ms.

Tempo: 180 BPM
Note: dotted eighth
Length: 250 ms
Frequency: 4 Hz
One beat: 333.33 ms
One bar: 1333.33 ms
Per bar: 5.333

Reverb and LFO use the same number

Set a reverb’s pre-delay and decay to these figures and the tail lands on the beat. LFOs are often dialled in hertz rather than milliseconds, so the table also gives 1,000 divided by the length — that is the rate to use for a tremolo or auto-pan locked to eighth notes.

Nearby cells

Same tempo, other notes

Worth knowing

One beat is 60,000 divided by the tempo; every other note is a multiple of it.
A dot adds half the value back; a triplet is two thirds.
LFOs are often set in hertz rather than milliseconds, so that figure is here too.
The bar figures assume a 4/4 time signature.

Common questions

Q. How many milliseconds is a dotted eighth at 180 BPM?

250 ms. One beat is 333.33 ms, and this length is a multiple of it.

Q. What rate do I give an LFO?

4 Hz — that is 1,000 divided by 250, the rate for a tremolo or auto-pan locked to this note.

Q. How many fit in a bar?

5.333, because a bar runs 1333.33 ms in 4/4.

Q. What is one step shorter?

A quarter triplet, which tightens the pattern.