91 BPM in Milliseconds: Delay Times and Note Lengths
At 91 BPM one beat (a quarter note) lasts 659.341 ms and one bar of 4/4 lasts 2.637 seconds. Below are the delay times for every note value, the same notes in Hz, bar and phrase lengths, samples per beat and the genres that typically sit at this tempo.
91 BPM at a glance
- One beat at 91 BPM lasts about 659.34 ms (60,000 divided by 91), an eighth note about 329.67 ms and a dotted eighth about 494.51 ms.
- A beat here is not a whole number of milliseconds. The nearest tempo where it is: 96 BPM, with 625 ms per beat.
- A beat is 29,076.923 samples at 44.1 kHz and 31,648.352 samples at 48 kHz, neither a whole number, so sample accurate loop points round slightly at both rates.
- A 4 bar phrase in 4/4 takes about 10.549 seconds, and 3 minutes of music at this tempo holds 68.25 bars of 4/4.
- Going from 91 to 92 BPM shortens each beat by 7.167 ms, about 1.09% of the beat.
- An LFO synced to quarter notes runs at about 1.517 Hz; synced to whole bars of 4/4 it runs at about 0.3792 Hz.
Delay times at 91 BPM
Milliseconds for each note value. Dotted notes are 1.5 times as long, triplets 2/3 as long. Rounded to 2 decimals.
| Note | Straight | Dotted | Triplet |
|---|---|---|---|
| Whole note (1/1) | 2,637.36 ms | 3,956.04 ms | 1,758.24 ms |
| Half note (1/2) | 1,318.68 ms | 1,978.02 ms | 879.12 ms |
| Quarter note (1/4) | 659.34 ms | 989.01 ms | 439.56 ms |
| Eighth note (1/8) | 329.67 ms | 494.51 ms | 219.78 ms |
| Sixteenth note (1/16) | 164.84 ms | 247.25 ms | 109.89 ms |
| 1/32 note | 82.42 ms | 123.63 ms | 54.95 ms |
| 1/64 note | 41.21 ms | 61.81 ms | 27.47 ms |
91 BPM in Hz for LFOs
The rate that repeats once per note, for an LFO, tremolo or auto pan synced to 91 BPM. Rounded to 3 decimals.
| Note | Straight | Dotted | Triplet |
|---|---|---|---|
| Whole note (1/1) | 0.379 Hz | 0.253 Hz | 0.569 Hz |
| Half note (1/2) | 0.758 Hz | 0.506 Hz | 1.138 Hz |
| Quarter note (1/4) | 1.517 Hz | 1.011 Hz | 2.275 Hz |
| Eighth note (1/8) | 3.033 Hz | 2.022 Hz | 4.55 Hz |
| Sixteenth note (1/16) | 6.067 Hz | 4.044 Hz | 9.1 Hz |
| 1/32 note | 12.133 Hz | 8.089 Hz | 18.2 Hz |
| 1/64 note | 24.267 Hz | 16.178 Hz | 36.4 Hz |
Bar lengths at 91 BPM
| 1 bar of 4/4 | 2.637 s |
| 2 bars of 4/4 | 5.275 s |
| 4 bars of 4/4 | 10.549 s |
| 8 bars of 4/4 | 21.099 s |
| 16 bars of 4/4 | 42.198 s |
| 32 bars of 4/4 | 84.396 s |
| 1 bar of 3/4 | 1.978 s |
| 1 bar of 6/8 | 1.978 s |
| 1 bar of 7/8 | 2.308 s |
| 1 bar of 5/4 | 3.297 s |
Samples per beat at 91 BPM
| Rate | Per beat | Per 4/4 bar |
|---|---|---|
| 44.1 kHz | 29,076.923 | 116,307.692 |
| 48 kHz | 31,648.352 | 126,593.407 |
| 96 kHz | 63,296.703 | 253,186.813 |
Sample rate times 60, divided by 91.
What music is 91 BPM?
Relaxed (80 to 99 BPM). This is a relaxed, head nodding tempo. A lot of hip hop, R&B and laid back grooves sit in this range, where the gap between beats leaves space for swing, ghost notes and vocal phrasing.
Typical tempo ranges that include 91 BPM: R&B, Downtempo and trip hop, Hip hop, Reggaeton.
Half time: 45.5 BPM, slower than the genre ranges listed here. Double time: 182 BPM, in the typical range of Punk, Hardcore techno and gabber.
A track can be written at one tempo and felt at the other, so a song at 91 BPM may be counted as 45.5 or 182 in a DAW or DJ software. Ranges are typical only; plenty of songs sit outside them.
Work at 91 BPM
The BPM and Delay Time Calculator does this math for any tempo, including decimals, with tap tempo and milliseconds back to BPM. All free, in your browser.
Nearby tempos
Questions about 91 BPM
How many milliseconds is a beat at 91 BPM?
A quarter note beat at 91 BPM lasts about 659.34 ms, which is 60,000 divided by 91. An eighth note is about 329.67 ms and a sixteenth note is about 164.84 ms.
What delay time should I use at 91 BPM?
For a quarter note echo set about 659.34 ms, for a dotted eighth set about 494.51 ms and for an eighth note triplet set about 219.78 ms. If your delay has a tempo sync mode, picking the note value there gives the same timing.
How long is one bar at 91 BPM?
One bar of 4/4 at 91 BPM lasts about 2.637 seconds, so 8 bars take about 21.099 seconds and 16 bars take about 42.198 seconds. A bar of 3/4 lasts about 1.978 seconds.
Is 91 BPM fast or slow?
Relaxed (80 to 99 BPM). Typical ranges that include 91 BPM: R&B, Downtempo and trip hop, Hip hop, Reggaeton. Half time is 45.5 BPM and double time is 182 BPM.