5274.04Hz
Start with your device volume low. Very low tones may be inaudible on phone or laptop speakers; very high tones can be uncomfortable on headphones.
5.274 kHzFrequency at A4 = 440 Hz
112MIDI note number
–Piano key (of 88)
6.5 cmWavelength in air
About E8
E8 has a frequency of 5.274 kHz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 112, outside the range of a standard piano.
In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so E8 is 43 semitones above A4: f = 440 × 2^((112 − 69) / 12) = 5,274.04 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.
E8 frequency in different tunings
| Tuning reference | E8 frequency |
|---|---|
| A4 = 440 Hz (ISO 16 standard) | 5.274 kHz |
| A4 = 442 Hz (many European orchestras) | 5.298 kHz |
| A4 = 443 Hz (Berlin, Vienna) | 5.31 kHz |
| A4 = 435 Hz (French diapason normal, 1859) | 5.214 kHz |
| A4 = 432 Hz (alternative tuning) | 5.178 kHz |
| A4 = 415 Hz (Baroque pitch) | 4.974 kHz |
| C4 = 256 Hz (scientific pitch) | 5.161 kHz |
Intervals from E8
| Interval | Note | Frequency | Ratio (just) |
|---|---|---|---|
| Minor second | F8 | 5.588 kHz | 16:15 |
| Major second | F♯8 | 5.92 kHz | 9:8 |
| Minor third | G8 | 6.272 kHz | 6:5 |
| Major third | G♯8 | 6.645 kHz | 5:4 |
| Perfect fourth | A8 | 7.04 kHz | 4:3 |
| Tritone | A♯8 | 7.459 kHz | 45:32 |
| Perfect fifth | B8 | 7.902 kHz | 3:2 |
| Minor sixth | C9 | 8.372 kHz | 8:5 |
| Major sixth | C♯9 | 8.87 kHz | 5:3 |
| Minor seventh | D9 | 9.397 kHz | 9:5 |
| Major seventh | D♯9 | 9.956 kHz | 15:8 |
| Octave | E9 | 10.548 kHz | 2:1 |
Frequently asked questions
What is the frequency of E8?
E8 is 5.274 kHz when A4 = 440 Hz (5.178 kHz if A4 = 432 Hz).
What MIDI number is E8?
E8 is MIDI note number 112.
Is E8 on a piano?
No – a standard 88-key piano runs from A0 to C8, so E8 is outside its range.