F1 — 43.65 Hz
F1 (MIDI 29) vibrates 43.65 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
F1 at different reference pitches
| Reference (A4) | F1 frequency | Used for |
|---|---|---|
| 415 Hz | 41.17 Hz | Baroque pitch |
| 432 Hz | 42.86 Hz | “Verdi” pitch |
| 440 Hz | 43.65 Hz | Standard concert pitch |
| 442 Hz | 43.85 Hz | European orchestras |
| 444 Hz | 44.05 Hz | European orchestras |
Physical properties
- Period: one cycle every 22.91 ms
- Wavelength in air: ≈ 7.86 m (at 20 °C, 343 m/s)
- MIDI note number: 29
- Octave up: F2 = 87.31 Hz · Octave down: 21.83 Hz