C5 — 523.25 Hz
C5 (MIDI 72) vibrates 523.25 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
C5 at different reference pitches
| Reference (A4) | C5 frequency | Used for |
|---|---|---|
| 415 Hz | 493.52 Hz | Baroque pitch |
| 432 Hz | 513.74 Hz | “Verdi” pitch |
| 440 Hz | 523.25 Hz | Standard concert pitch |
| 442 Hz | 525.63 Hz | European orchestras |
| 444 Hz | 528.01 Hz | European orchestras |
Physical properties
- Period: one cycle every 1.91 ms
- Wavelength in air: ≈ 65.6 cm (at 20 °C, 343 m/s)
- MIDI note number: 72
- Octave up: C6 = 1046.50 Hz · Octave down: 261.63 Hz