C3 — 130.81 Hz
C3 (MIDI 48) vibrates 130.81 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
C3 at different reference pitches
| Reference (A4) | C3 frequency | Used for |
|---|---|---|
| 415 Hz | 123.38 Hz | Baroque pitch |
| 432 Hz | 128.43 Hz | “Verdi” pitch |
| 440 Hz | 130.81 Hz | Standard concert pitch |
| 442 Hz | 131.41 Hz | European orchestras |
| 444 Hz | 132.00 Hz | European orchestras |
Physical properties
- Period: one cycle every 7.64 ms
- Wavelength in air: ≈ 2.62 m (at 20 °C, 343 m/s)
- MIDI note number: 48
- Octave up: C4 = 261.63 Hz · Octave down: 65.41 Hz