B1 — 61.74 Hz
B1 (MIDI 35) vibrates 61.74 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
B1 at different reference pitches
| Reference (A4) | B1 frequency | Used for |
|---|---|---|
| 415 Hz | 58.23 Hz | Baroque pitch |
| 432 Hz | 60.61 Hz | “Verdi” pitch |
| 440 Hz | 61.74 Hz | Standard concert pitch |
| 442 Hz | 62.02 Hz | European orchestras |
| 444 Hz | 62.30 Hz | European orchestras |
Physical properties
- Period: one cycle every 16.20 ms
- Wavelength in air: ≈ 5.56 m (at 20 °C, 343 m/s)
- MIDI note number: 35
- Octave up: B2 = 123.47 Hz · Octave down: 30.87 Hz