T-01 · Time

Delay & Reverb Calculator

BPM to note-length delay times — triplet & dotted included — plus tempo-synced reverb sizes: pre-delay and decay from tight rooms to huge FX verbs.

TEMPO

BPM

40130220

NOTE MODE

Applies to delay times — reverb follows the plain BPM.

QUICK PRESETS

SHAREABLE URL

Delay timesStraight

NoteFractionTime (ms)Freq (Hz)

Whole1/12000.000.50

Half1/21000.001.00

Quarter1/4500.002.00

Eighth1/8250.004.00

Sixteenth1/16125.008.00

Thirtysecond1/3262.5016.00

Reverb sizesSynced to BPM

SizeTotalPre-delayDecay

Huge FX VerbTransition, reverse, throw FX8000 ms62.5–125 ms~7875 ms

Long HallBallad vocal, cinematic synth4000 ms62.5 ms~3937.5 ms

Medium Hall / PlateLead vocal, piano2000 ms40–62.5 ms~1937.5 ms

Small RoomGuitar, snare, backing vocal1000 ms15–30 ms~970 ms

Tight AmbienceDrums, close vocal, acoustic500 ms0–10 ms~490 ms

Slap SpacePop vocal thickness250 ms20–40 ms~210 ms

Total time is the full reverb tail. Set your reverb's pre-delay and decay so they sum to it — the tail then breathes in time with the track. Wider pre-delay keeps transients clear; shorter glues the source to the space.