123 BPM in Milliseconds: Delay Times and Note Lengths
At 123 BPM one beat (a quarter note) lasts 487.805 ms and one bar of 4/4 lasts 1.951 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.
123 BPM at a glance
- One beat at 123 BPM lasts about 487.8 ms (60,000 divided by 123), an eighth note about 243.9 ms and a dotted eighth about 365.85 ms.
- A beat here is not a whole number of milliseconds. The nearest tempo where it is: 125 BPM, with 480 ms per beat.
- A beat is 21,512.195 samples at 44.1 kHz and 23,414.634 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 7.805 seconds, and 3 minutes of music at this tempo holds 92.25 bars of 4/4.
- Going from 123 to 124 BPM shortens each beat by 3.934 ms, about 0.81% of the beat.
- An LFO synced to quarter notes runs at 2.05 Hz; synced to whole bars of 4/4 it runs at 0.5125 Hz.
Delay times at 123 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) | 1,951.22 ms | 2,926.83 ms | 1,300.81 ms |
| Half note (1/2) | 975.61 ms | 1,463.41 ms | 650.41 ms |
| Quarter note (1/4) | 487.8 ms | 731.71 ms | 325.2 ms |
| Eighth note (1/8) | 243.9 ms | 365.85 ms | 162.6 ms |
| Sixteenth note (1/16) | 121.95 ms | 182.93 ms | 81.3 ms |
| 1/32 note | 60.98 ms | 91.46 ms | 40.65 ms |
| 1/64 note | 30.49 ms | 45.73 ms | 20.33 ms |
123 BPM in Hz for LFOs
The rate that repeats once per note, for an LFO, tremolo or auto pan synced to 123 BPM. Rounded to 3 decimals.
| Note | Straight | Dotted | Triplet |
|---|---|---|---|
| Whole note (1/1) | 0.513 Hz | 0.342 Hz | 0.769 Hz |
| Half note (1/2) | 1.025 Hz | 0.683 Hz | 1.538 Hz |
| Quarter note (1/4) | 2.05 Hz | 1.367 Hz | 3.075 Hz |
| Eighth note (1/8) | 4.1 Hz | 2.733 Hz | 6.15 Hz |
| Sixteenth note (1/16) | 8.2 Hz | 5.467 Hz | 12.3 Hz |
| 1/32 note | 16.4 Hz | 10.933 Hz | 24.6 Hz |
| 1/64 note | 32.8 Hz | 21.867 Hz | 49.2 Hz |
Bar lengths at 123 BPM
| 1 bar of 4/4 | 1.951 s |
| 2 bars of 4/4 | 3.902 s |
| 4 bars of 4/4 | 7.805 s |
| 8 bars of 4/4 | 15.61 s |
| 16 bars of 4/4 | 31.22 s |
| 32 bars of 4/4 | 62.439 s |
| 1 bar of 3/4 | 1.463 s |
| 1 bar of 6/8 | 1.463 s |
| 1 bar of 7/8 | 1.707 s |
| 1 bar of 5/4 | 2.439 s |
Samples per beat at 123 BPM
| Rate | Per beat | Per 4/4 bar |
|---|---|---|
| 44.1 kHz | 21,512.195 | 86,048.78 |
| 48 kHz | 23,414.634 | 93,658.537 |
| 96 kHz | 46,829.268 | 187,317.073 |
Sample rate times 60, divided by 123.
What music is 123 BPM?
Dance tempo (120 to 139 BPM). This is the core dance music range. Steady four to the floor club music clusters here, and DJs often mix within a few BPM of it, so tracks at this tempo are easy to blend with each other.
Typical tempo ranges that include 123 BPM: Pop, Rock, Disco and nu disco, House.
Half time: 61.5 BPM, in the typical range of Ballads, Reggae, R&B. Double time: 246 BPM, faster than the genre ranges listed here.
A track can be written at one tempo and felt at the other, so a song at 123 BPM may be counted as 61.5 or 246 in a DAW or DJ software. Ranges are typical only; plenty of songs sit outside them.
Work at 123 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 123 BPM
How many milliseconds is a beat at 123 BPM?
A quarter note beat at 123 BPM lasts about 487.8 ms, which is 60,000 divided by 123. An eighth note is about 243.9 ms and a sixteenth note is about 121.95 ms.
What delay time should I use at 123 BPM?
For a quarter note echo set about 487.8 ms, for a dotted eighth set about 365.85 ms and for an eighth note triplet set about 162.6 ms. If your delay has a tempo sync mode, picking the note value there gives the same timing.
How long is one bar at 123 BPM?
One bar of 4/4 at 123 BPM lasts about 1.951 seconds, so 8 bars take about 15.61 seconds and 16 bars take about 31.22 seconds. A bar of 3/4 lasts about 1.463 seconds.
Is 123 BPM fast or slow?
Dance tempo (120 to 139 BPM). Typical ranges that include 123 BPM: Pop, Rock, Disco and nu disco, House. Half time is 61.5 BPM and double time is 246 BPM.