BPM Tapper

Delay & reverb calculator

Turn your BPM into delay and reverb times. Copy a value into your effect.

120 BPM is an example. Enter your track's tempo.

Need the tempo? Tap it first.

How to use

Choose a note length.
Copy the millisecond value.
Paste it into your effect.

Delay times

  • Whole note1/12000ms
  • Half note1/21000ms
  • Quarter note1/4500ms
  • Eighth note1/8250ms
  • Sixteenth note1/16125ms
  • Thirty-second1/3262.5ms
  • Sixty-fourth1/6431.25ms

Reverb timing

  • Pre-delay31.25ms
  • Decay968.75ms
  • Total1000ms

A rhythmic starting point. Adjust by ear.

A beat means a quarter note. Values are rounded to 2 decimal places; rounded parts can differ from the total by 0.01 ms.

One-time tip

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An optional, one-time tip to help keep BPM Tapper free.

What your support helps fundDomain costs, testing, maintenance, and continued development.
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Other lets you set your own amount in PayPal.

PayPal handles checkout and shows the payment methods available for your location. Your taps and BPM reading are never sent to PayPal.

The PayPal button is shared with InvisiChar, another tool by the same author.

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Copy the timing you need.

Enter your track’s tempo, choose a note length and copy the number into an effect that accepts milliseconds. One quarter note is 60,000 divided by BPM. All calculations stay in your browser.

Choose the rhythm.

Straight is the standard note length. Dotted lasts 1.5 times as long. A triplet lasts two thirds as long. These choices change the delay table only.

A starting point for reverb.

Choose a total length and pre-delay note. Decay is the total minus the pre-delay, using unrounded values. This is a rhythmic reference, not a room measurement or a promise of the best sound. Effects may define decay differently. Adjust by ear.

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