Calculator
BPM to Milliseconds Calculator
A beat lasts 60,000 divided by the BPM, in milliseconds. Set a delay or a reverb to the song's tempo: ask the calculator below, such as 1/2 beat at 120 bpm in ms, or read the table of common tempos.
250 ms. 1 step of working below.
You asked 1/2 beat at 120 bpm in ms, read as 1/2 beat at 120 bpm in ms
250 ms
exact
Working
- 1/2 beats ÷ 120 bpm = 1/4 s
Try one
Ask in plain words
- Ask for one beat, a quarter note in 4/4: 1 beat at 120 bpm in ms is 500 ms.
- Ask for parts of a beat for other notes: 1/2 beat for an eighth, 1/4 beat for a sixteenth, 3/4 beat for a dotted eighth, 1/3 beat for an eighth-note triplet.
- Read the answer as an exact fraction and as a decimal, with each step of the working shown.
Note lengths in milliseconds
A beat is a quarter note in 4/4. Rounded to three decimals; the calculator above gives the exact fraction.
| BPM | Quarter note | Eighth note | Dotted eighth | Sixteenth note | Eighth-note triplet | Bar of 4/4 |
|---|---|---|---|---|---|---|
| 60 | 1000 ms | 500 ms | 750 ms | 250 ms | 333.333 ms | 4000 ms |
| 70 | 857.143 ms | 428.571 ms | 642.857 ms | 214.286 ms | 285.714 ms | 3428.571 ms |
| 80 | 750 ms | 375 ms | 562.5 ms | 187.5 ms | 250 ms | 3000 ms |
| 90 | 666.667 ms | 333.333 ms | 500 ms | 166.667 ms | 222.222 ms | 2666.667 ms |
| 100 | 600 ms | 300 ms | 450 ms | 150 ms | 200 ms | 2400 ms |
| 110 | 545.455 ms | 272.727 ms | 409.091 ms | 136.364 ms | 181.818 ms | 2181.818 ms |
| 120 | 500 ms | 250 ms | 375 ms | 125 ms | 166.667 ms | 2000 ms |
| 128 | 468.75 ms | 234.375 ms | 351.563 ms | 117.188 ms | 156.25 ms | 1875 ms |
| 130 | 461.538 ms | 230.769 ms | 346.154 ms | 115.385 ms | 153.846 ms | 1846.154 ms |
| 140 | 428.571 ms | 214.286 ms | 321.429 ms | 107.143 ms | 142.857 ms | 1714.286 ms |
| 150 | 400 ms | 200 ms | 300 ms | 100 ms | 133.333 ms | 1600 ms |
| 160 | 375 ms | 187.5 ms | 281.25 ms | 93.75 ms | 125 ms | 1500 ms |
| 170 | 352.941 ms | 176.471 ms | 264.706 ms | 88.235 ms | 117.647 ms | 1411.765 ms |
| 174 | 344.828 ms | 172.414 ms | 258.621 ms | 86.207 ms | 114.943 ms | 1379.31 ms |
| 180 | 333.333 ms | 166.667 ms | 250 ms | 83.333 ms | 111.111 ms | 1333.333 ms |
Questions
- How do I convert BPM to milliseconds?
- Divide 60,000 by the BPM: at 120 BPM a beat, a quarter note in 4/4, lasts 500 ms.
- What delay time should I use at 120 BPM?
- 500 ms for quarter notes, 250 ms for eighth notes, 375 ms for a dotted eighth and 125 ms for sixteenths.
- How long is a bar at 128 BPM?
- 1875 ms: four beats of 468.75 ms in 4/4.
- How long is a triplet?
- An eighth-note triplet is a third of a beat: about 166.67 ms at 120 BPM.
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