TEMPO IN. TIMING OUT.
BPM to milliseconds & Hz
Find the right note length for your delay, pre-delay or LFO.
Quarter-note beat · 1–999 BPM
2.667 Hz · 0.375 seconds
| NOTE | Straight × 1 | Dotted × 1.5 | Triplet × ⅔ |
|---|---|---|---|
| 1/1Whole | |||
| 1/2Half | |||
| 1/4Quarter | |||
| 1/8Eighth | |||
| 1/16Sixteenth | |||
| 1/3232nd | |||
| 1/6464th |
Milliseconds → BPM
Have a delay time? Choose the note it represents.
375 ms as a dotted 1/8 = 120 quarter-note BPM.
FROM THE GRID TO YOUR SESSION
Set a tempo-synced delay or LFO.
Set your project BPM, choose a note and copy its value into a plug-in or pedal that accepts milliseconds. Switch to Hz for a modulation rate that repeats once per selected note.
Quarter-note ms = 60,000 ÷ BPM
Quarter-note Hz = BPM ÷ 60
For any selected note: Hz = 1,000 ÷ ms
*Copied values use up to 6 decimal places. Values below 0.001 use 7 significant digits to preserve small rates.
See the formula & worked examplesWhat is a dotted eighth delay?
At 120 BPM, a quarter note is 500 ms. An eighth is 250 ms; adding half of that length gives a dotted eighth of 375 ms. At 128 BPM, it is 351.5625 ms.
How do triplets change delay time?
A triplet lasts two-thirds of its straight note value. At 120 BPM, a straight eighth is 250 ms and an eighth-note triplet is 166.667 ms (rounded), or 6 Hz. A dotted note instead lasts 1.5 times the straight value.
Why does ms → BPM need a note value?
The same 375 ms can mean 160 BPM for a straight quarter, 80 BPM for a straight eighth or 120 BPM for a dotted eighth. The interval alone cannot tell you the song’s tempo.
Is Hz the pitch of a musical note?
No. Here Hz measures repetitions per second, such as an LFO cycle. A 500 ms cycle is 2 Hz. This tool does not calculate tuning frequencies or analyze audio.
What about reverb, swing and time signatures?
These are even note lengths, not swing or groove timing. Reverb pre-delay can use them as starting points; a room’s decay cannot be calculated from BPM. In 6/8 or another meter, enter the equivalent quarter-note BPM if your tempo marks a different beat. For example, dotted-quarter = 80 means quarter-note = 120; use 120 here.