A#5 — 932.33 Hz
A#5 (MIDI 82) vibrates 932.33 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
A#5 at different reference pitches
| Reference (A4) | A#5 frequency | Used for |
|---|---|---|
| 415 Hz | 879.35 Hz | Baroque pitch |
| 432 Hz | 915.38 Hz | “Verdi” pitch |
| 440 Hz | 932.33 Hz | Standard concert pitch |
| 442 Hz | 936.57 Hz | European orchestras |
| 444 Hz | 940.80 Hz | European orchestras |
Physical properties
- Period: one cycle every 1.07 ms
- Wavelength in air: ≈ 36.8 cm (at 20 °C, 343 m/s)
- MIDI note number: 82
- Octave up: A#6 = 1864.66 Hz · Octave down: 466.16 Hz