Turn tempo into milliseconds for delays, echoes and rhythmic effects. Find straight, dotted or triplet note lengths, or work backwards from time to BPM.
One beat is a quarter note. Decimals work too.
0.5 seconds · 120 BPM
| Note value | Straight (ms) | Dotted (ms) | Triplet (ms) |
|---|---|---|---|
| Whole note | 2,000 | 3,000 | 1,333.333 |
| Half note | 1,000 | 1,500 | 666.667 |
| Quarter note | 500 | 750 | 333.333 |
| Eighth note | 250 | 375 | 166.667 |
| Sixteenth note | 125 | 187.5 | 83.333 |
| 32nd note | 62.5 | 93.75 | 41.667 |
This calculator treats the BPM beat as a quarter note. Divide 60,000 by BPM to get its duration in milliseconds. At 120 BPM, a quarter note lasts 500 ms, an eighth note 250 ms and a sixteenth note 125 ms.
Quarter note ms = 60,000 / BPMA dotted note lasts one and a half times its straight value. A triplet note lasts two thirds of that value: three fit into the time of two straight notes. At 120 BPM, a dotted eighth is 375 ms and an eighth-note triplet is about 166.667 ms.
Dotted × 1.5 · Triplet × ⅔Choose ms → BPM and enter the duration of a quarter note. A 500 ms quarter note means 120 BPM. For beats per second, divide BPM by 60; 120 BPM is 2 BPS. The table updates as you type.
BPM = 60,000 / quarter note msFirst measure your audio’s BPM or tap along with the beat. Enter that tempo here, choose a note length, and copy the milliseconds into your delay’s time control. Use dotted or triplet timing when that rhythm suits the part.
No. This calculator converts numbers and note durations. Editing a BPM result or calculating a delay time does not stretch, retune or export an audio file.
It is the length of one quarter note, not a full bar and not the selected dotted or triplet value. This keeps the inverse BPM conversion unambiguous.
Yes. Values from 1 to 1,000 BPM are supported, including decimals. The table rounds its display to three decimal places; calculations use the unrounded tempo.
A note duration depends on tempo and the note value used as the beat. This tool uses a quarter-note beat. A meter marking alone does not change the quarter-note duration. If your tempo marking uses another note value, convert that pulse to quarter-note BPM first.