B7 — 3951.07 Hz
B7 (MIDI 107) vibrates 3951.07 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
B7 at different reference pitches
| Reference (A4) | B7 frequency | Used for |
|---|---|---|
| 415 Hz | 3726.57 Hz | Baroque pitch |
| 432 Hz | 3879.23 Hz | “Verdi” pitch |
| 440 Hz | 3951.07 Hz | Standard concert pitch |
| 442 Hz | 3969.03 Hz | European orchestras |
| 444 Hz | 3986.99 Hz | European orchestras |
Physical properties
- Period: one cycle every 0.25 ms
- Wavelength in air: ≈ 8.7 cm (at 20 °C, 343 m/s)
- MIDI note number: 107
- Octave up: B7 = 7902.13 Hz · Octave down: 1975.53 Hz