BPM to Milliseconds Calculator
Converting beats per minute (BPM) to milliseconds is an essential task in audio production. Delay units, reverb pre-delay controls, and many hardware effects processors accept time values in milliseconds, not musical note names. When your delay time is locked to the tempo of your track, echoes and reflections fall rhythmically on the beat, giving your mix cohesion and energy. When delay times are set arbitrarily, echoes fight with the rhythm section and muddy the result. The core formula is simple: one quarter note equals 60,000 divided by the BPM. All other note values scale from that anchor. A dotted quarter note is one and a half times the quarter note value, making it perfect for creating the classic U2-style rhythmic delay. Eighth notes and sixteenth notes create tight slap echoes that add motion without cluttering the arrangement. Triplet values, which divide the beat into three equal parts rather than two, give an off-beat, swinging feel that sits against straight rhythms in an interesting way. This calculator shows delay times for ten note subdivisions simultaneously, so you can compare values and choose the one that best suits your track. Enter your project BPM and the table updates instantly.
Full delay time reference table
All values calculated from your BPM. Quarter note = 60,000 / BPM.
| Note value | Multiplier | Delay time (ms) |
|---|---|---|
| Whole note | 4x quarter | -- |
| Half note | 2x quarter | -- |
| Dotted half | 3x quarter | -- |
| Quarter note | 1x (beat) | -- |
| Dotted quarter | 1.5x quarter | -- |
| Eighth note | 0.5x quarter | -- |
| Dotted eighth | 0.75x quarter | -- |
| Sixteenth note | 0.25x quarter | -- |
| Triplet quarter | 2/3x quarter | -- |
| Triplet eighth | 1/3x quarter | -- |
How BPM to milliseconds conversion works
One minute contains 60,000 milliseconds. At a given BPM, each quarter note (one beat) lasts 60,000 / BPM milliseconds. All other note values are multiples or fractions of that figure.
Quarter note (ms) = 60,000 / BPM
Whole note (ms) = 60,000 / BPM * 4
Half note (ms) = 60,000 / BPM * 2
Dotted half (ms) = 60,000 / BPM * 3
Dotted quarter (ms) = 60,000 / BPM * 1.5
Eighth note (ms) = 60,000 / BPM / 2
Dotted eighth (ms) = 60,000 / BPM * 0.75
Sixteenth note (ms) = 60,000 / BPM / 4
Triplet quarter (ms) = 60,000 / BPM * 2 / 3
Triplet eighth (ms) = 60,000 / BPM * 1 / 3
Worked example at 120 BPM
- Quarter note = 60,000 / 120 = 500.00 ms
- Eighth note = 500 / 2 = 250.00 ms
- Dotted quarter = 500 * 1.5 = 750.00 ms
- Sixteenth note = 500 / 4 = 125.00 ms
- Triplet eighth = 500 / 3 = 166.67 ms
BPM to milliseconds: frequently asked questions
Why do I need to convert BPM to milliseconds for audio production?
Delay and reverb effects in audio production are set in milliseconds, not musical note values. When you know your track's BPM, converting it to milliseconds lets you set delay times that are rhythmically in sync with your music. A quarter-note delay at 120 BPM is exactly 500 ms, which keeps echoes locked to the beat rather than floating randomly through the mix.
What is the formula for converting BPM to milliseconds?
The formula for one quarter note (one beat) is: ms = 60,000 / BPM. For other note values, multiply or divide by the appropriate ratio. A whole note is four quarter notes (60,000 / BPM * 4), a half note is two quarter notes (60,000 / BPM * 2), an eighth note is half a quarter note (60,000 / BPM / 2), and a sixteenth note is a quarter of a beat (60,000 / BPM / 4). Triplet values use a ratio of 2/3.
How do I use delay timing in mixing to avoid muddiness?
Sync your delay to note values that complement your rhythm track. Short delays (eighth or sixteenth notes) add movement and width without cluttering. Longer delays (dotted quarter or dotted half) create a slapback or ambient effect. Using tempo-synced delays prevents echoes from clashing rhythmically with drums and percussion, which is the main cause of a muddy or indistinct mix.
What is reverb pre-delay and how does BPM affect it?
Pre-delay is a short silence inserted before the reverb tail begins. It separates the dry signal from the reverb, making the source sound clearer and more present. Common pre-delay values range from 10 ms to 100 ms. Setting pre-delay to a small note subdivision (such as a 32nd note or 16th note) can make the reverb feel rhythmically alive rather than static. Use the BPM to ms conversion to find the exact value that matches your project tempo.
Can my DAW sync delay times to BPM automatically?
Most modern DAWs (Pro Tools, Ableton Live, Logic Pro, Cubase, FL Studio) allow delay plug-ins to sync to the project tempo, so you can select note values directly. However, some hardware units, outboard effects, and older plug-ins only accept millisecond values. In those cases, use this calculator to convert your BPM to the exact ms value for the note subdivision you want.
Sources and methodology
- Music theory: standard beat subdivision formulas (60,000 ms / BPM). Verified against standard music theory practice.
- Audio Engineering Society (AES): aes.org for professional audio production standards.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology. For professional production work, validate against your DAW's tempo map.