Note reference
E-sharp Note (E#)
The E♯ note is pitch class 5. On piano, play the highlighted key; on guitar, use any highlighted fret position. In standard pitch notation, E♯4 is 349.23 Hz when A4 is tuned to 440 Hz.
E♯ on piano
Find the highlighted key and then move left or right by complete groups of 12 keys to locate the same note name in other octaves.
E♯ on sheet music
The vertical staff position follows the letter name. A sharp or flat changes the pitch without changing the line or space assigned to that letter.
E♯ on guitar
In standard tuning, the diagram shows open-string and fretted locations from fret 0 through fret 12. Learn two or three nearby positions first, then connect the full pattern.
Why the note is spelled E♯
E♯ is used when the note must function as a raised E or as the seventh scale degree of F♯. Writing F instead may hide the scale degree or chord spelling even though the piano key is the same.
This spelling appears in F♯ major, C♯ major, and minor-key forms that raise the seventh scale degree. In chord and scale notation, keeping each scale degree on the expected letter makes intervals easier to read.
E♯ frequencies by octave
The table uses twelve-tone equal temperament with A4 = 440 Hz. Other concert-pitch standards shift every value slightly.
| Scientific pitch | MIDI note | Frequency |
|---|---|---|
| E♯1 | 29 | 43.65 Hz |
| E♯2 | 41 | 87.31 Hz |
| E♯3 | 53 | 174.61 Hz |
| E♯4 | 65 | 349.23 Hz |
| E♯5 | 77 | 698.46 Hz |
| E♯6 | 89 | 1396.91 Hz |
| E♯7 | 101 | 2793.83 Hz |
Frequently asked questions
Where is E♯ on the piano?
Use the highlighted key in the keyboard diagram. The same key repeats every 12 semitones, so every octave has another E♯.
Where is E♯ on guitar?
The fretboard diagram marks every occurrence through fret 12 in standard tuning E–A–D–G–B–E. The pattern repeats after the 12th fret.
How is E♯ written on sheet music?
The staff diagram shows E♯4 in treble clef and E♯3 in bass clef. Add the accidental before the notehead when the key signature does not already supply it.
What frequency is E♯?
Frequency depends on octave. With A4 = 440 Hz, E♯4 is 349.23 Hz; each higher octave doubles the frequency.
Is E♯ the same as F?
They are enharmonic equivalents in equal temperament, so they have the same pitch on a piano. The written name changes according to the key and harmonic role.