F2 — 87.31 Hz
F2 (MIDI 41) vibrates 87.31 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
F2 at different reference pitches
| Reference (A4) | F2 frequency | Used for |
|---|---|---|
| 415 Hz | 82.35 Hz | Baroque pitch |
| 432 Hz | 85.72 Hz | “Verdi” pitch |
| 440 Hz | 87.31 Hz | Standard concert pitch |
| 442 Hz | 87.70 Hz | European orchestras |
| 444 Hz | 88.10 Hz | European orchestras |
Physical properties
- Period: one cycle every 11.45 ms
- Wavelength in air: ≈ 3.93 m (at 20 °C, 343 m/s)
- MIDI note number: 41
- Octave up: F3 = 174.61 Hz · Octave down: 43.65 Hz