Convert a track's tempo into exact delay and echo times in milliseconds — for setting delay/reverb plugins to match the beat.
The BPM to Delay Time Calculator converts a tempo into the millisecond delay times that keep echoes, reverb pre-delay and LFOs in time with the music. Every note value from whole to 1/64 note is shown in straight, dotted and triplet form, with the frequency in Hz for synced modulation.
Setting delays to musical values rather than arbitrary milliseconds is the difference between echoes that groove and echoes that muddy the mix.
A quarter note lasts 60,000 ÷ BPM milliseconds. Other values scale from it: whole = ×4, half = ×2, eighth = ×0.5, sixteenth = ×0.25; a dotted note is 1.5× longer; a triplet is 2/3 as long. The matching LFO frequency is 1000 ÷ the time in ms.
Set delay time without a sync option.
Use 1/64–1/16 notes.
Tune release to the groove.
Sync modulation speed.
| Note values | 1/1 to 1/64 |
|---|---|
| Types | Straight, dotted, triplet |
| Extras | LFO frequency in Hz |
500 ms.
375 ms.
Delay and reverb plugins take a time in milliseconds, but musicians think in note values — this bridges the two so a delay lands perfectly in time with the track.
This tool runs entirely in your browser using the Web Audio API. Nothing is uploaded, stored or shared — there is no server to send your file to, so it works offline once the page has loaded.
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