The Delay & Reverb Time Calculator – What It Does

Reverb

This calculator helps you determine appropriate reverb settings based on your track’s tempo (BPM).

It calculates total reverb time, pre-delay, and decay time for different reverb types (like Hall, Room, and Plate), using musical timing values to ensure your reverb tails groove rhythmically with the music.

Whether you’re dialing in reverb effects for guitars, vocals, synths, or drums, it ensures that you’re rhythmically synced to your track.

Perfect for producers, musicians, and live sound engineers who want tighter, more musical mixes.

Delay

This tool maps delay times to musical note values based on BPM. It shows the duration (in milliseconds) and corresponding frequency (in Hz) for regular, dotted, and triplet delay settings — helping you dial in tempo-synced delays even on analog pedals or when only given a delay time.

How to Use the Reverb Calculator

Enter the BPM (beats per minute) of the song you’re working with.

Choose Reverb.

Click “Calculate” to instantly generate the pre-delay, decay, and total reverb times for the most common reverb types and musical note divisions.

Use the results to set the timing of your reverb plugin, pedal, or device for perfectly synced reverb.

Click “Reset” to clear the inputs and start a new calculation.

How to Use the Delay Calculator

Enter the BPM of your song into the input field (e.g., 120).

Click the “Delay” toggle button to activate Delay Mode.

Press the “Calculate” button.

The table will display:

• Note Value (e.g., 1/4, 1/8, etc.)
• Regular delay time in milliseconds and Hz (standard subdivision)
• Dotted delay (50% longer than regular)
• Triplet delay (2/3 the length of a regular delay)

What’s the Point of Hz in the Delay Calculator?

The Hz column tells you how frequently a delay repeats (how many times per second). This is particularly useful for:

LFO Synchronization (Low-Frequency Oscillators):

• Many analog synths and effects don’t let you sync LFOs to BPM directly — they ask for speed in Hz instead.
• By using this calculator, you can match the LFO rate to musical timing.
  • Example: Want an LFO to pulse on every quarter note at 120 BPM? Set it to 2 Hz.
  • Need a dotted eighth-note wobble? Use the Hz value under the “Dotted” column for 1/8 notes.

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Analog Delay Pedals or Modulators:

• Analog gear often uses rate knobs with no labels or just a vague range.
• By knowing the Hz equivalent of a note division, you can fine-tune your modulation to groove with the tempo by ear or using tap-tempo tools.

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Bottom Line:

Hz = musical timing translated into modulation speed.

It bridges the gap between tempo-based music theory and devices that only understand rate or frequency.