BPM delay time is the number of milliseconds between the original sound and a repeat when the delay is synchronized to a song’s tempo. Divide 60,000 by the BPM to find one quarter note in milliseconds, then multiply or divide that result to calculate other note values.
For example, a song at 120 BPM has a 500 ms quarter note because 60,000 ÷ 120 = 500. An eighth-note delay is 250 ms, a dotted-eighth delay is 375 ms, and an eighth-note-triplet delay is about 166.67 ms. If BPM and note values are unfamiliar, this guide to what beats per minute means explains the underlying measurement.
What Is BPM Delay Time?
BPM delay time converts musical tempo into a repeat interval. Instead of choosing an arbitrary delay such as 430 ms, you choose a note value—such as a quarter note, dotted eighth, or sixteenth note—and calculate the time that note occupies at the project tempo.
Tempo synchronization helps echoes reinforce the groove rather than landing between unrelated rhythmic positions. It does not mean every repeat must be obvious or perfectly quantized. The wet/dry balance, filtering, feedback, stereo placement, and performance all affect how the delay feels in a mix.
Delay is only one part of tempo-aware arranging and mixing. A broader guide to using tempo in music production explains how project speed also shapes performance, editing, automation, and other time-based effects.
Delay time versus BPM
BPM describes how many beats occur in one minute. Delay time describes the duration between the dry signal and the first repeat. The two measurements are connected when the delay is synchronized to the beat.
At 60 BPM, one quarter-note beat lasts 1,000 ms. At 120 BPM, it lasts 500 ms. Increasing the BPM shortens the synchronized delay because each beat occupies less time. A useful first-principles rule is:
Quarter-note delay in ms = 60,000 ÷ BPM
The formula assumes the BPM beat unit is a quarter note, as it normally is in 4/4. In meters where the perceived pulse uses another note value, the mathematical quarter-note duration may not be the subdivision you hear as one beat.
The calculation becomes easier when the steady pulse is separated from the events placed around it. This comparison of beat and tempo clarifies why tempo measures pulse speed rather than the complexity of the rhythm.
Delay time versus feedback
Delay time controls when the first echo occurs. Feedback controls how much of the delayed signal returns to the delay input, which determines how many subsequent echoes you hear and how slowly they decay.
A 500 ms delay with low feedback may produce one or two audible repeats. The same 500 ms delay with high feedback may produce a long trail, but the first repeat still arrives after 500 ms. Very high feedback can become unstable or self-oscillate on some delay units, so raise it carefully.
Musical delay versus latency and synchronization delay
Musical delay is an intentional echo effect. Audio latency is an unwanted or operational delay caused by recording, processing, buffering, or monitoring. MIDI sync delay and track-delay compensation are timing corrections used to align devices or tracks.
These controls may all use milliseconds, but they solve different problems. If a vocal feels late while recording, changing the tempo-synced echo is not the correct fix. If an external drum machine is consistently behind the DAW, synchronization or latency compensation—not a creative delay plug-in—is the relevant control.
How Do You Calculate Delay Time From BPM?
Calculate BPM delay time by finding the quarter-note duration and scaling it to the required subdivision. Straight notes use powers of two, dotted notes use a factor of 1.5, and triplets use a factor of two-thirds relative to the corresponding straight note.
If the song tempo is uncertain, first use a reliable method for finding the tempo of a recording. A wrong BPM produces a mathematically correct delay for the wrong pulse.
The BPM-to-milliseconds formula
One minute contains 60,000 milliseconds. Dividing that duration by the number of beats per minute gives the duration of one beat:
Quarter-note delay in ms = 60,000 ÷ BPM
At 120 BPM:
60,000 ÷ 120 = 500 ms
At 100 BPM:
60,000 ÷ 100 = 600 ms
At 128 BPM:
60,000 ÷ 128 = 468.75 ms
Keep several decimal places during the calculation and round only the final value. Many plug-ins accept decimal values; hardware pedals may require the nearest whole millisecond.
How to calculate straight note values
Straight note values divide or multiply the quarter-note duration:
| Note value | Calculation from quarter note | Calculation from BPM |
|---|---|---|
| Whole note | Quarter × 4 | 240,000 ÷ BPM |
| Half note | Quarter × 2 | 120,000 ÷ BPM |
| Quarter note | Quarter × 1 | 60,000 ÷ BPM |
| Eighth note | Quarter ÷ 2 | 30,000 ÷ BPM |
| Sixteenth note | Quarter ÷ 4 | 15,000 ÷ BPM |
| Thirty-second note | Quarter ÷ 8 | 7,500 ÷ BPM |
At 120 BPM, the whole note is 2,000 ms, the half note is 1,000 ms, the quarter note is 500 ms, the eighth note is 250 ms, and the sixteenth note is 125 ms.
How to calculate dotted delay times
A dot adds half of a note’s original duration, so a dotted note lasts 1.5 times as long as the corresponding straight note:
Dotted-note delay = straight-note delay × 1.5
At 120 BPM, an eighth note lasts 250 ms. Therefore:
250 × 1.5 = 375 ms
A dotted-eighth repeat lands three sixteenth notes after the original sound. That spacing lets a simple performance interlock with its echoes, which is why dotted-eighth delay is widely used for rhythmic guitar, synth, and vocal effects.
How to calculate triplet delay times
Three triplet notes occupy the time normally used by two straight notes of the same written value. Therefore:
Triplet delay = straight-note delay × 2 ÷ 3
At 120 BPM, an eighth note is 250 ms:
250 × 2 ÷ 3 = 166.67 ms
Do not confuse an eighth-note triplet with a quarter-note triplet. At 120 BPM, the eighth-note triplet is about 166.67 ms, while the quarter-note triplet is about 333.33 ms. Understanding how beats are grouped in different time signatures also helps when the groove is compound or swung.
What Are the Most Common BPM Delay Times?
Common delay times range from short sixteenth-note textures to spacious quarter-note echoes. The correct value depends on both BPM and subdivision, so there is no single universal setting for vocals, guitar, drums, or synths.
BPM delay chart for 60–200 BPM
The following values are rounded to two decimal places. The dotted-eighth column equals three-quarters of a quarter note, while the eighth-note-triplet column equals one-third of a quarter note.
| BPM | Quarter note | Eighth note | Dotted eighth | Eighth triplet | Sixteenth note |
| 60 | 1,000 ms | 500 ms | 750 ms | 333.33 ms | 250 ms |
| 80 | 750 ms | 375 ms | 562.50 ms | 250 ms | 187.50 ms |
| 90 | 666.67 ms | 333.33 ms | 500 ms | 222.22 ms | 166.67 ms |
| 100 | 600 ms | 300 ms | 450 ms | 200 ms | 150 ms |
| 120 | 500 ms | 250 ms | 375 ms | 166.67 ms | 125 ms |
| 128 | 468.75 ms | 234.38 ms | 351.56 ms | 156.25 ms | 117.19 ms |
| 140 | 428.57 ms | 214.29 ms | 321.43 ms | 142.86 ms | 107.14 ms |
| 160 | 375 ms | 187.50 ms | 281.25 ms | 125 ms | 93.75 ms |
| 180 | 333.33 ms | 166.67 ms | 250 ms | 111.11 ms | 83.33 ms |
| 200 | 300 ms | 150 ms | 225 ms | 100 ms | 75 ms |
The chart provides starting points, not mandatory mix settings. A delay can be nudged slightly earlier or later to suit a performance, but deliberate offsets should be judged in context rather than introduced because a formula seems too exact.
Worked example at 100 BPM
At 100 BPM, the quarter note is 600 ms. From that base value:
- Quarter note: 600 ms
- Eighth note: 300 ms
- Dotted eighth: 450 ms
- Eighth-note triplet: 200 ms
- Sixteenth note: 150 ms
A 300 ms eighth-note delay can add steady movement without the space required by a full quarter note. A 150 ms sixteenth-note delay is denser and may work more like rhythmic thickening, particularly when feedback is low.
Worked example at 128 BPM
At 128 BPM, the quarter note is 468.75 ms. The main subdivisions are:
- Quarter note: 468.75 ms
- Eighth note: 234.38 ms
- Dotted eighth: 351.56 ms
- Eighth-note triplet: 156.25 ms
- Sixteenth note: 117.19 ms
Rounding 234.375 ms to 234.38 ms has no meaningful musical consequence in most mixes. Larger manual changes can affect groove, especially on short subdivisions or exposed transient material. Producers working near this tempo may also find the overview of typical EDM tempo ranges useful when interpreting half-time and double-time patterns.
Which Delay Subdivision Should You Choose?
Choose a delay subdivision by listening to the space between phrases and the rhythmic role the echoes should perform. Long values create separation and atmosphere; shorter values increase density; dotted and triplet values create patterns that contrast with straight subdivisions.
Quarter-note delay for spacious repeats
A quarter-note delay places one repeat on each beat. It is easy to hear and can create a broad, deliberate echo around vocals, lead guitar, synth lines, and sparse percussion.
Quarter notes can crowd a busy arrangement when feedback is high. Filtering low and high frequencies from the repeats, lowering the wet level, or using automation at phrase endings can preserve clarity without abandoning the rhythmic spacing.
Eighth-note delay for steady rhythmic movement
An eighth-note delay produces two repeat positions per quarter-note beat. It usually feels more active than a quarter-note delay while remaining straightforward against a grid of quarter and eighth notes.
This setting often supports pop vocals, arpeggiated synths, plucked instruments, and rhythmic guitar. If every echo competes with a new performed note, shorten the feedback tail or use sidechain ducking so the repeats become more audible between phrases.
Dotted-eighth delay for interlocking patterns
A dotted-eighth delay lasts three sixteenth notes. Against a straight sixteenth-note grid, each repeat lands between several notes played by the musician, creating an interlocking pattern that can sound more complex than the original performance.
The effect depends on articulation and muting. A loose performance with sustained notes may produce a wash rather than a precise pattern. Start with low feedback, play a simple phrase, and add repeats only after the rhythmic relationship is clear.
Triplet delay for compound or shuffled grooves
Triplet delay divides time into three equal parts where straight subdivisions normally divide it into two or four. It can fit 6/8, 12/8, shuffle, swing, blues, and other grooves with ternary subdivision.
The written meter alone does not determine the right delay. A 4/4 groove can contain triplets, and a 6/8 song may use a dotted-quarter pulse. Listen for the performed subdivision and decide whether the delay should reinforce it or create a contrasting cross-rhythm.
Sixteenth-note delay for short rhythmic texture
A sixteenth-note delay creates fast repeats that can thicken drums, synths, guitars, and vocal fragments. With minimal feedback, it may be felt as movement or width more than heard as a separate echo.
Because the repeats are close together, high feedback can fill the available space quickly. Short values also expose timing inaccuracies and may produce comb-filter-like coloration when mixed loudly with the dry signal.
How Do You Set BPM Delay Time in a DAW or Delay Pedal?
Use tempo-sync mode when the DAW or pedal already knows the BPM; select the required note division and let the device calculate milliseconds. Use free-time mode when you need to enter a calculated value manually or intentionally move the repeat away from the exact grid.
Use tempo-sync mode
In sync mode, delay plug-ins commonly display note symbols instead of milliseconds. Select 1/4 for a quarter note, 1/8 for an eighth note, 1/8D or a dotted symbol for a dotted eighth, and 1/8T for an eighth-note triplet.
Check the plug-in’s manual if the notation is unclear. Some devices distinguish left and right delay divisions, while others apply one shared value. When a session tempo changes, a synchronized delay usually follows the automation automatically.
Enter milliseconds manually
In free-time mode, calculate the value and enter it in milliseconds. Manual entry is useful when a pedal lacks MIDI clock, when the recording was not made to a fixed grid, or when a slightly offset repeat sits better with the performance.
For a stereo delay, calculate a musically related value for each side rather than duplicating one value automatically. At 120 BPM, for example, the left side could use an eighth note at 250 ms and the right side a dotted eighth at 375 ms.
Use tap tempo when the BPM is unknown
Tap tempo estimates the beat interval from repeated taps. Tap along with a stable pulse for several beats rather than relying on two quick taps, then test whether the device detected the full-time or half-time tempo.
A track that feels like 70 BPM may also be analysed as 140 BPM. The two readings are mathematically related, but choosing the wrong perceived pulse can produce a subdivision twice as long or half as long as intended. Practising with a metronome and stable pulse makes this ambiguity easier to hear.
Check whether the project tempo changes
Tempo maps, ritardandos, accelerandos, and live recordings can make one fixed millisecond value drift away from the beat. A tempo-synced plug-in can follow a DAW tempo map, but a hardware pedal receiving no clock cannot know that the song has changed speed.
For expressive recordings, forcing every echo onto a rigid grid may sound unnatural. Automate the time, use tap tempo for a representative section, or choose a shorter, lower-feedback delay whose drift is less exposed.
Fine-tune by ear without losing the groove
The calculated value is the neutral rhythmic reference. Move away from it only with a clear listening goal: slightly early repeats can feel urgent, while slightly late repeats can feel relaxed.
Judge the adjustment with the whole arrangement playing. A soloed echo may sound clean at the exact value yet mask the vocal once drums, bass, and harmony return. Timing, filtering, level, and feedback should be evaluated together.
How Can BPM-Synced Delay Be Used in a Mix?
BPM-synced delay can create space, rhythmic motion, width, or emphasis without relying on a long reverb tail. The best settings support the source and leave room for the next important sound.
Vocal delay that preserves lyrical clarity
For lead vocals, start with an eighth or quarter note and keep the repeats quieter than the dry voice. High-pass and low-pass filtering can remove low-frequency mud and bright consonants from the echoes.
Delay throws—automated repeats applied only to selected words or phrase endings—often preserve more clarity than continuous high feedback. A longer synchronized value can occupy the gap after a line without covering the next lyric.
Guitar and synth rhythmic echoes
Dotted-eighth delay can turn evenly played notes into an interlocking rhythmic figure. Quarter and eighth delays are useful when the performance already contains detail and the echo should reinforce rather than redesign the pattern.
The source envelope matters. Short, muted notes expose individual repeats; sustained notes build overlapping layers. Distortion placed after a high-feedback delay can become intense quickly, while filtering in the feedback path can make each repeat progressively darker.
Drum and percussion delay
Short eighth, triplet, or sixteenth delays can create fills, rolls, and call-and-response patterns. Apply them selectively to a snare, rimshot, hi-hat, or percussion hit instead of sending the entire drum bus by default.
Low frequencies accumulate rapidly in feedback loops. High-pass filtering the delayed signal helps protect kick and bass clarity. If the delay creates extra transients at every subdivision, reduce feedback or automate the send so the groove does not become overcrowded.
Stereo and ping-pong delay
Stereo delay uses different timing, level, or filtering between the left and right channels. Ping-pong delay alternates repeats across the stereo field. Both can create width, but wide effects should be checked in mono because channel interaction can change level and tone.
Musically related values often feel coherent: an eighth note on one side and a dotted eighth on the other, for example. DJ-oriented production also benefits from understanding tempo relationships and transitions when delay tails continue across sections or mixes.
Reverb pre-delay based on musical timing
Reverb pre-delay is the time between the dry sound and the start of the reverb response. It is not the same as an echo delay, but the same BPM mathematics can provide useful starting points.
Full quarter or eighth notes are often too long for transparent pre-delay. Start from a short subdivision such as a thirty-second or sixty-fourth note, then adjust by ear. At 120 BPM, a thirty-second note is 62.5 ms and a sixty-fourth note is 31.25 ms. Longer pre-delay separates the dry source from the reverb more clearly; shorter pre-delay blends them together.
Frequently Asked Questions
What is the delay time for 120 BPM?
At 120 BPM, a quarter-note delay is 500 ms, an eighth-note delay is 250 ms, a dotted-eighth delay is 375 ms, and an eighth-note-triplet delay is approximately 166.67 ms. The correct choice depends on the rhythmic effect you want.
What is the formula for converting BPM to milliseconds?
Divide 60,000 by the BPM to calculate a quarter note in milliseconds. From that result, divide by two for an eighth note, divide by four for a sixteenth, multiply by 1.5 for the corresponding dotted value, or multiply by two-thirds for the corresponding triplet.
Which delay subdivision works best for vocals?
There is no universal best vocal delay. Eighth notes can add steady motion, quarter notes create more open echoes, and dotted eighths create a stronger rhythmic pattern; lyrical density and arrangement space should decide the setting.
Does feedback change the BPM delay time?
Feedback does not change when the first repeat occurs. It sends part of the delayed signal back through the effect, increasing the number and decay length of later repeats.
Should reverb pre-delay use the same calculation?
The BPM formula can generate musically related pre-delay starting points, especially short subdivisions such as thirty-second or sixty-fourth notes. Pre-delay should still be adjusted by ear because its purpose is to separate the dry source from the reverb, not necessarily to create an audible rhythmic echo.
Is BPM delay time the same as audio latency?
No. BPM delay time is an intentional creative repeat synchronized to musical tempo, while audio latency is the processing or transmission delay that can make recording and monitoring feel late.
Hurst is a music rhythm and tempo analysis writer at Music Tempo Finder. She focuses on BPM detection, tempo analysis, beat synchronization, and music workflow tools for DJs, producers, musicians, and music learners.