E1 — 41.20 Hz
E1 (MIDI 28) vibrates 41.20 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
E1 at different reference pitches
| Reference (A4) | E1 frequency | Used for |
|---|---|---|
| 415 Hz | 38.86 Hz | Baroque pitch |
| 432 Hz | 40.45 Hz | “Verdi” pitch |
| 440 Hz | 41.20 Hz | Standard concert pitch |
| 442 Hz | 41.39 Hz | European orchestras |
| 444 Hz | 41.58 Hz | European orchestras |
Physical properties
- Period: one cycle every 24.27 ms
- Wavelength in air: ≈ 8.32 m (at 20 °C, 343 m/s)
- MIDI note number: 28
- Octave up: E2 = 82.41 Hz · Octave down: 20.60 Hz