E5
659.255Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
76
Piano key
56
Octave
5
Frequency
659.255 Hz
Period
1.5169 ms
Wavelength
0.5203 m
Pitch class
E
Notation
SPN
MIDI is the note number synths and software pass around (0–127). Pitch class is the note without its octave — all the Es share one.
At other reference pitches
| Reference (A4) | E5 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 647.269 Hz | the alternative-tuning circle |
| 440 Hzstandard | 659.255 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 662.252 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 663.75 Hz | some sharper continental orchestras |
Every row is E5 — only the A4 you tune to changes. A frequency scales straight with the reference: E5 at 432 Hz is the 440 Hz value times 432⁄440.
Move around
Every E
Chords with E in them
E appears in each of these — see the whole chord grid.