C6 — 1046.50 Hz
C6 (MIDI 84) vibrates 1046.50 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
C6 at different reference pitches
| Reference (A4) | C6 frequency | Used for |
|---|---|---|
| 415 Hz | 987.04 Hz | Baroque pitch |
| 432 Hz | 1027.47 Hz | “Verdi” pitch |
| 440 Hz | 1046.50 Hz | Standard concert pitch |
| 442 Hz | 1051.26 Hz | European orchestras |
| 444 Hz | 1056.02 Hz | European orchestras |
Physical properties
- Period: one cycle every 0.96 ms
- Wavelength in air: ≈ 32.8 cm (at 20 °C, 343 m/s)
- MIDI note number: 84
- Octave up: C7 = 2093.00 Hz · Octave down: 523.25 Hz