E1 · 41.20 Hz

E1 is piano key 8 of 88 and MIDI note 28 - the deep bass register, the territory of bass guitar low strings and organ pedals. Play the pure tone below, tune to it, or explore the note in every octave.

41.2Hz
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E1 on the staff and the piano

On the bass clef, E1 sits under the fourth ledger line below the staff.

Notes this far below the staff are usually printed an octave higher with an 8vb sign, so players do not have to count 4 ledger lines.

On the piano, E1 is key 8 of 88, octave 1 - a white key. It is 32 semitones below middle C (C4, key 40).

C4E1

Play it on the online piano, or see all 88 note frequencies on one page.

E1 at a glance

Frequency
41.20 Hz
Wavelength (in air)
8.32 m
MIDI note
28
Piano key
8 / 88
Octave
1
Enharmonic
—

All values assume twelve-tone equal temperament at the international standard pitch of A4 = 440 Hz. In that system every semitone has the same size - a frequency ratio of 2^(1/12) - so E1 is exactly 440 × 2^(-41/12) Hz. Under alternative references the note shifts with the reference: at A4 = 432 Hz, E1 becomes 40.45 Hz.

E in every octave

NoteFrequencyMIDIPiano key
E1 ←41.20 Hz288
E282.41 Hz4020
E3164.81 Hz5232
E4329.63 Hz6444
E5659.26 Hz7656
E61318.5 Hz8868
E72637.0 Hz10080

Each octave doubles the frequency - the simplest relationship in music, and the reason notes an octave apart sound like “the same note, higher”.

Who plays E1

E1 is within the usual range of the piano, bass guitar and double bass. It is outside the usual range of all the classical voice types listed here.

Instruments
  • Piano: A0–C8
  • Bass guitar (4-string): E1–G4
  • Double bass: E1–G4
Voices

None of the usual voice ranges

Ranges are approximate: they are the commonly cited sounding (concert) pitches, and real ranges vary by player, instrument, tuning and repertoire. Guitar, bass guitar and double bass are written an octave higher than they sound; B♭ clarinet and trumpet are written a whole tone higher.

Neighboring notes

One semitone down is D♯1 at 38.89 Hz; one semitone up is F1 at 43.65 Hz. Need a frequency between notes, or a different waveform? The tone generator plays anything from 20 Hz to 20 kHz; the note ↔ frequency converter does the math both directions, and the chromatic tuner listens to your instrument and shows the offset in cents.

E1 FAQ

What frequency is E1?

E1 is 41.20 Hz in twelve-tone equal temperament with the standard reference of A4 = 440 Hz. Every semitone step multiplies the frequency by the twelfth root of two (about 1.0595), and E1 sits 41 semitones below A4.

What MIDI number and piano key is E1?

E1 is MIDI note 28 and key 8 of 88 on a standard piano. Octave numbering follows scientific pitch notation, where middle C is C4 (MIDI 60).

Where is E1 on the piano and the staff?

E1 is key 8 of 88 on a standard piano, in octave 1, 32 semitones below middle C. On the bass clef staff it sits under the fourth ledger line below the staff.

How do I tune to E1?

Play the tone above and match your instrument by ear until the beating between the two pitches slows and disappears, or use the chromatic tuner with your microphone for a cents readout. Small mistunings show up as slow beats: one beat per second at this pitch means you are about 41.5 cents off.