Delay & Reverb Time Calculator
Enter your song BPM to get tempo-synced delay times and practical reverb timing recommendations.
Why a Reverb y Delay Calculator Matters
Delay and reverb are easiest to dial in when they move with the song tempo. If your echoes and tails are out of sync, mixes can feel messy or rushed. This calculator gives you clean time values in milliseconds so your effects breathe in rhythm with drums, bass, vocals, and melodic phrases.
The idea is simple: convert musical note values (like quarter notes or dotted eighths) into exact milliseconds based on BPM. Then use those values in your DAW plugins. You can do this by hand, but a calculator is faster and less error-prone when you are producing quickly.
Core Timing Formula
The base equation is:
Quarter note (ms) = 60,000 / BPM
From there, every other note value is a multiplier:
- Half note = quarter × 2
- Whole note = quarter × 4
- Eighth note = quarter × 0.5
- Sixteenth note = quarter × 0.25
- Dotted value = base × 1.5
- Triplet value = base × 2/3
How to Use These Values in Your DAW
1) Set your delay time
If your delay plugin has note sync mode, choose the same division directly. If it uses milliseconds, copy the calculated ms value from the results panel.
2) Choose a pre-delay for vocal clarity
Reverb pre-delay creates space before the reverb bloom starts. Typical ranges:
- 5–15 ms: tight, glued, intimate
- 15–35 ms: balanced and clear
- 35–60 ms: more separation and pop-vocal presence
3) Shape reverb tail with musical length
A useful strategy is matching tail length to phrase timing. For a medium song section, 1 to 2 bars often works. For cinematic transitions, 3 to 6 bars can be beautiful—just control low-end buildup.
Practical Presets by Style
Pop / Singer-Songwriter
- Lead vocal delay: 1/8 dotted or 1/4
- Feedback: 20%–35%
- Plate reverb pre-delay: 20–40 ms
- Tail: around 1.2–2.2 seconds
EDM / House
- Synth delay: 1/8 or 1/16
- Ping-pong delay: 1/8 dotted for motion
- Hall reverb pre-delay: 10–25 ms
- Tail: 1.5–3.0 seconds (automate in drops/breaks)
Ambient / Cinematic
- Delay: 1/4 or 1/2 with high diffusion
- Feedback: 45%–70% (watch buildup)
- Pre-delay: 30–60 ms for separation
- Tail: 3.5–8 seconds depending on arrangement density
Common Mistakes (and Quick Fixes)
- Too much feedback: If echoes mask transients, reduce feedback by 5%–15%.
- Long tails in busy choruses: Shorten decay or high-pass the reverb return.
- No pre-delay on vocals: Add a small pre-delay to keep words intelligible.
- Ignoring song section changes: Automate delay/reverb between verse, chorus, and bridge.
FAQ
Should I always sync delay to tempo?
Usually yes for musical consistency. But unsynced slap delays (80–140 ms) can sound great on guitars and vocals for vintage color.
How many delays should a mix use?
Most clean mixes need only one or two core delays plus automation. More can work, but complexity rises quickly.
Can I set reverb decay in bars exactly?
This calculator gives a musical target. Final decay still depends on style, source, plugin character, and how much EQ/compression you apply on the reverb return.