The Core Equation
Because there are 60 seconds (60,000 milliseconds) in a minute, one quarter note (1 beat in 4/4 time) is calculated as:
Quarter Note (ms) = 60,000 รท BPM
Master Tempo-to-MS Reference Table
| BPM | 1/4 Note (ms) | 1/8 Note (ms) | 1/16 Note (ms) | Dotted 1/8 (ms) | 1/8 Triplet (ms) |
|---|---|---|---|---|---|
| 70 | 857.14 | 428.57 | 214.29 | 642.86 | 285.71 |
| 80 | 750.00 | 375.00 | 187.50 | 562.50 | 250.00 |
| 90 | 666.67 | 333.33 | 166.67 | 500.00 | 222.22 |
| 100 | 600.00 | 300.00 | 150.00 | 450.00 | 200.00 |
| 110 | 545.45 | 272.73 | 136.36 | 409.09 | 181.82 |
| 120 | 500.00 | 250.00 | 125.00 | 375.00 | 166.67 |
| 124 | 483.87 | 241.94 | 120.97 | 362.90 | 161.29 |
| 128 | 468.75 | 234.38 | 117.19 | 351.56 | 156.25 |
| 130 | 461.54 | 230.77 | 115.38 | 346.15 | 153.85 |
| 140 | 428.57 | 214.29 | 107.14 | 321.43 | 142.86 |
| 150 | 400.00 | 200.00 | 100.00 | 300.00 | 133.33 |
| 160 | 375.00 | 187.50 | 93.75 | 281.25 | 125.00 |
| 174 | 344.83 | 172.41 | 86.21 | 258.62 | 114.94 |
Where to Apply Millisecond Values
- Compressor Release Times: Set release to an 8th or 16th note value so the gain reduction needle recovers in rhythm with the groove.
- Gated Reverb & Snare Envelopes: Set noise gate hold and release times to match quarter or 8th note durations.
- Tape Delay & Slapback: Vintage analog tape echoes rarely have tempo lock; dial in exact 1/16 or 1/32 note delays for authentic vintage vibe.
- Modulation Rates (Chorus, Flanger, Tremolo): Convert LFO frequency in Hz (where
Hz = 1000 / ms) to create perfectly synchronized sweeps.
Calculate Custom Tempos Instantly
Need exact timing for fractional tempos or specialized subdivisions? Visit our full BPM to Milliseconds Calculator.