A#6 — 1864.66 Hz
A#6 (MIDI 94) vibrates 1864.66 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
A#6 at different reference pitches
| Reference (A4) | A#6 frequency | Used for |
|---|---|---|
| 415 Hz | 1758.71 Hz | Baroque pitch |
| 432 Hz | 1830.75 Hz | “Verdi” pitch |
| 440 Hz | 1864.66 Hz | Standard concert pitch |
| 442 Hz | 1873.13 Hz | European orchestras |
| 444 Hz | 1881.61 Hz | European orchestras |
Physical properties
- Period: one cycle every 0.54 ms
- Wavelength in air: ≈ 18.4 cm (at 20 °C, 343 m/s)
- MIDI note number: 94
- Octave up: A#7 = 3729.31 Hz · Octave down: 932.33 Hz