G#4 — 415.30 Hz
G#4 (MIDI 68) vibrates 415.30 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
G#4 at different reference pitches
| Reference (A4) | G#4 frequency | Used for |
|---|---|---|
| 415 Hz | 391.71 Hz | Baroque pitch |
| 432 Hz | 407.75 Hz | “Verdi” pitch |
| 440 Hz | 415.30 Hz | Standard concert pitch |
| 442 Hz | 417.19 Hz | European orchestras |
| 444 Hz | 419.08 Hz | European orchestras |
Physical properties
- Period: one cycle every 2.41 ms
- Wavelength in air: ≈ 82.6 cm (at 20 °C, 343 m/s)
- MIDI note number: 68
- Octave up: G#5 = 830.61 Hz · Octave down: 207.65 Hz