BPM to Delay-Time (Milliseconds) Calculator

1. Enter your track tempo in beats per minute, the same number shown in your DAW.
2. Read the quarter-note time in milliseconds, the length of one beat.
3. Use the eighth, dotted-eighth and sixteenth times for delay, echo and gate effects.
4. Dial the millisecond value straight into your delay or reverb plug-in.

Delay time is how long an audio effect waits before repeating a sound, measured in milliseconds. When that time matches a note value at your tempo, the echoes fall neatly on the beat and the effect feels musical rather than random.

Producers sync delays, reverbs, tremolos and other time-based effects to the tempo so they reinforce the groove. A delay set to a dotted eighth, for example, creates a rolling, syncopated echo that has become a signature sound in pop, rock and electronic music. Getting the timing exactly right is what separates a polished, professional mix from one where the echoes fight the beat instead of supporting it.

1. There are 60000 milliseconds in a minute.
2. Divide by the tempo to get the length of one beat, a quarter note.
3. Halve it for an eighth, quarter it for a sixteenth, and so on down the note values.
4. Multiply a note by 1.5 for its dotted version, or by two thirds for its triplet.

Because every value is just a fraction of the quarter note, one division gives you the whole family of delay times for your track.

At 120 BPM the quarter note is 60000 divided by 120, which is 500 milliseconds. An eighth note is half of that, 250 ms, and a sixteenth is 125 ms. The dotted eighth, at 1.5 times an eighth, is 375 ms, the classic delay setting. Change the tempo to 128 BPM and the quarter note drops to about 469 ms, with every other value scaling with it.

The Tempo

Faster tempos shorten every note value, so a delay that felt spacious at 90 BPM becomes tight and busy at 140 BPM.

The Note Value

Choosing an eighth versus a quarter changes the feel completely, from driving to laid back, even though the tempo has not moved.

Dotted and Triplet Feels

Dotted values add a bouncy, off-grid pulse, while triplets give a rolling three-against-two swing.

Feedback and Mix

The millisecond time sets the rhythm, but the feedback and wet level decide how many repeats you hear and how loud they sit.

Every value is a simple multiple of the quarter note. This table shows the fractions and the exact times at 120 BPM.

To sync an LFO in hertz instead of milliseconds, divide 1000 by the millisecond value: 500 ms equals 2 Hz.

Setting a Delay or Echo

Enter the millisecond time so repeats land on the beat instead of blurring the mix.

Timing a Reverb Pre-Delay

A short note value as pre-delay keeps vocals clear while still sitting in the space.

Programming Modulation

Match a tremolo, filter or gate rate to a note value so movement locks to the groove.

1. Guessing the Milliseconds

Eyeballing a delay time leaves echoes slightly off the grid, which muddies the rhythm. Use the exact value.

2. Ignoring Dotted and Triplet Options

Straight values are not always the most musical; the dotted eighth is often the sound people are chasing.

3. Forgetting Host Sync Rounding

Some plug-ins round to whole milliseconds, so trust the note-value sync when your delay offers it.

4. Over-Feeding the Delay

Correct timing still needs sensible feedback, or the repeats pile up and wash out the track.

The conversion is exact arithmetic, so the millisecond values are precise for a steady tempo. It assumes a constant BPM and standard note divisions.

Divide 60000 by the tempo to get the quarter-note time. At 120 BPM that is 60000 divided by 120, which equals 500 milliseconds per beat.

A dotted eighth is 1.5 times an eighth note, or 0.75 of a beat. At 120 BPM that is 375 milliseconds, the classic rhythmic delay setting.

A triplet eighth is two thirds of a regular eighth note. At 120 BPM the eighth is 250 ms, so the triplet is about 167 milliseconds.

A short value such as a sixteenth or thirty-second note works well, keeping the source clear while the reverb tail still sits in time.

Divide 1000 by the millisecond value. A 500 ms quarter note becomes 2 Hz, which you can dial into a tempo-free LFO.

Yes. Because the time is 60000 divided by BPM, a higher tempo gives a smaller millisecond value for every note.

Synced echoes fall on the beat and reinforce the groove, while unsynced delays can smear the rhythm and clutter the mix.

No. The calculator runs entirely in your browser and nothing you enter is stored or sent anywhere.

• Tempo and beats per minute (Wikipedia).
• Delay as an audio effect (Wikipedia).
• Note values in music (Wikipedia).