90 BPM · dotted quarter
1000
ms
Frequency 1 Hz
90 BPM dotted quarter — 1000 ms
At 90 BPM a dotted quarter lasts 1000 ms. One beat is 666.67 ms and a bar is 2666.67 ms.
- Tempo
- 90 BPM
- Note
- dotted quarter
- Length
- 1000 ms
- Frequency
- 1 Hz
- One beat
- 666.67 ms
- One bar
- 2666.67 ms
- Per bar
- 2.667
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
whole note
2666.67 ms0.375 Hz
half note
1333.33 ms0.75 Hz
quarter note
666.67 ms1.5 Hz
eighth note
333.33 ms3 Hz
sixteenth note
166.67 ms6 Hz
thirty-second note
83.33 ms12 Hz
dotted half
2000 ms0.5 Hz
dotted quarter
1000 ms1 Hz
dotted eighth
500 ms2 Hz
quarter triplet
444.44 ms2.25 Hz
eighth triplet
222.22 ms4.5 Hz
sixteenth triplet
111.11 ms9 Hz
Same note, other tempos
60 BPM
1500 ms0.667 Hz
70 BPM
1285.71 ms0.778 Hz
75 BPM
1200 ms0.833 Hz
80 BPM
1125 ms0.889 Hz
85 BPM
1058.82 ms0.944 Hz
90 BPM
1000 ms1 Hz
95 BPM
947.37 ms1.056 Hz
100 BPM
900 ms1.111 Hz
105 BPM
857.14 ms1.167 Hz
110 BPM
818.18 ms1.222 Hz
115 BPM
782.61 ms1.278 Hz
120 BPM
750 ms1.333 Hz
124 BPM
725.81 ms1.378 Hz
126 BPM
714.29 ms1.4 Hz
128 BPM
703.13 ms1.422 Hz
130 BPM
692.31 ms1.444 Hz
135 BPM
666.67 ms1.5 Hz
140 BPM
642.86 ms1.556 Hz
145 BPM
620.69 ms1.611 Hz
150 BPM
600 ms1.667 Hz
160 BPM
562.5 ms1.778 Hz
170 BPM
529.41 ms1.889 Hz
174 BPM
517.24 ms1.933 Hz
180 BPM
500 ms2 Hz
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 quarter at 90 BPM?
1000 ms. One beat is 666.67 ms, and this length is a multiple of it.
Q. What rate do I give an LFO?
1 Hz — that is 1,000 divided by 1000, the rate for a tremolo or auto-pan locked to this note.
Q. How many fit in a bar?
2.667, because a bar runs 2666.67 ms in 4/4.
Q. What is one step shorter?
A quarter note, which tightens the pattern.