E4 — 329.63 Hz
E4 (MIDI 64) vibrates 329.63 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
E4 at different reference pitches
| Reference (A4) | E4 frequency | Used for |
|---|---|---|
| 415 Hz | 310.90 Hz | Baroque pitch |
| 432 Hz | 323.63 Hz | “Verdi” pitch |
| 440 Hz | 329.63 Hz | Standard concert pitch |
| 442 Hz | 331.13 Hz | European orchestras |
| 444 Hz | 332.62 Hz | European orchestras |
Physical properties
- Period: one cycle every 3.03 ms
- Wavelength in air: ≈ 1.04 m (at 20 °C, 343 m/s)
- MIDI note number: 64
- Octave up: E5 = 659.26 Hz · Octave down: 164.81 Hz
Strings tuned to E4
- Guitar — Standard (E A D G B E)
- Guitar — Drop D (D A D G B E)
- Guitar — Open A (E A E A C# E)
- Guitar — Open C (C G C G C E)
- Guitar — Open E (E B E G# B E)
- 7-String Guitar — Standard (B E A D G B E)
- 7-String Guitar — Drop A (A E A D G B E)
- 8-String Guitar — Standard (F# B E A D G B E)
- 8-String Guitar — Drop E (E B E A D G B E)
- 12-String Guitar — Standard (E A D G B E, octave courses)
- Ukulele — Standard (G C E A)
- Ukulele — Baritone (D G B E)
- Ukulele — Low G (G C E A)
- Irish Bouzouki — GDAE (Octave Mandolin)
- Charango — Standard (G C E A E)
- Lap Steel Guitar — C6 (C E G A C E)
- Lap Steel Guitar — Open E (E B E G# B E)