128 BPM to MS: Delay Time Chart

Every delay time, LFO rate and reverb pre-delay at 128 BPM, the tempo of house, EDM and progressive house, straight, dotted and triplet.

Updated October 13, 2026 · By Niraj Kumar

Tempo

BPM

↑ ↓ nudge by 1, with Shift by 0.1. One beat = 468.75 ms.

Delay times · click to copy

Note	Straight	Dotted	Triplet
2 bars
1/1 (bar)
1/2
1/4
1/8
1/16
1/32
1/64

Reverb pre-delay & decay

Hall1/64 + tail to 2 bars

Pre-delay
Decay
Total

Large room1/128 + tail to 1 bar

Pre-delay
Decay
Total

Small room1/256 + tail to 1/2

Pre-delay
Decay
Total

Tight ambience1/512 + tail to 1/4

Pre-delay
Decay
Total

A starting point: shorten the decay until the tail stops masking the next phrase.

Bar & sample length

Time signature

Bars

Sample rate

Milliseconds

Seconds

Samples

Delay time → BPM

Delay time

Heard as

Feel

128 BPM

How long is a beat at 128 BPM?

At 128 BPM a quarter note lasts 468.75 ms (60,000 ÷ 128). An eighth is 234.38 ms, a dotted eighth 351.56 ms, a sixteenth 117.19 ms and a sixteenth triplet 78.13 ms. A one-beat LFO runs at 2.13 Hz, and one 4/4 bar lasts 1,875 ms.

quarter note (ms) = 60 000 ÷ BPM;  note = quarter × q;
dotted = note × 1.5;  triplet = note × 2/3;  rate (Hz) = 1000 ÷ ms;
bar = quarter × beats × 4 ÷ unit;  samples = seconds × sample rate

This page uses the same method as the BPM to MS Calculator, which explains each term and assumption in full.

Delay times and LFO rates at 128 BPM
Note	Straight (ms)	Dotted (ms)	Triplet (ms)	Straight (Hz)
2 bars	3,750	5,625	2,500	0.267
1/1 (bar)	1,875	2,812.5	1,250	0.533
1/2	937.5	1,406.25	625	1.07
1/4	468.75	703.13	312.5	2.13
1/8	234.38	351.56	156.25	4.27
1/16	117.19	175.78	78.13	8.53
1/32	58.59	87.89	39.06	17.1
1/64	29.3	43.95	19.53	34.1

Worked example

A house track at 128 BPM with a dotted eighth delay on the lead

1Quarter note: 60,000 ÷ 128 = 468.75 ms
2Eighth note: 468.75 ÷ 2 = 234.38 ms; dotted: 234.38 × 1.5 = 351.56 ms
3Sixteenth triplet: 117.19 × 2/3 = 78.13 ms
4LFO once per beat: 1000 ÷ 468.75 = 2.13 Hz
5Hall reverb: pre-delay 1/64 = 29.3 ms, decay 3,720.7 ms to end on 2 bars

At 128 BPM: 468.75 ms quarter, 351.56 ms dotted eighth, 78.13 ms sixteenth triplet, 2.13 Hz per beat.

Frequently asked questions

What is the dotted eighth delay time at 128 BPM?

351.56 ms. An eighth note at 128 BPM is 234.38 ms, and a dot adds half again: 234.38 × 1.5 = 351.56 ms. The dotted quarter is twice that, 703.13 ms, and the plain quarter 468.75 ms.

What music is made at 128 BPM?

Mostly house, EDM and progressive house. 128 BPM is the standard tempo of house and mainstream EDM. Its quarter note is 468.75 ms, and DJs and producers often add dotted eighth delays of 351.56 ms to plucks and leads, plus a 1/4 or 1/2 note pump on the sidechain.

What is 128 BPM in half time and double time?

Half time is 64 BPM, with a 937.5 ms quarter note; double time is 256 BPM, with a 234.38 ms quarter note. A delay set to a quarter note at 128 BPM is a half note in double time and an eighth note in half time, so it stays in sync either way.