1318.51Hz
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1.319 kHzFrequency at A4 = 440 Hz
88MIDI note number
68Piano key (of 88)
26.0 cmWavelength in air
About E6
E6 has a frequency of 1.319 kHz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 88 and key number 68 on an 88-key piano.
In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so E6 is 19 semitones above A4: f = 440 × 2^((88 − 69) / 12) = 1,318.51 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.
E6 frequency in different tunings
| Tuning reference | E6 frequency |
|---|---|
| A4 = 440 Hz (ISO 16 standard) | 1.319 kHz |
| A4 = 442 Hz (many European orchestras) | 1.325 kHz |
| A4 = 443 Hz (Berlin, Vienna) | 1.328 kHz |
| A4 = 435 Hz (French diapason normal, 1859) | 1.304 kHz |
| A4 = 432 Hz (alternative tuning) | 1.295 kHz |
| A4 = 415 Hz (Baroque pitch) | 1.244 kHz |
| C4 = 256 Hz (scientific pitch) | 1.29 kHz |
Intervals from E6
| Interval | Note | Frequency | Ratio (just) |
|---|---|---|---|
| Minor second | F6 | 1.397 kHz | 16:15 |
| Major second | F♯6 | 1.48 kHz | 9:8 |
| Minor third | G6 | 1.568 kHz | 6:5 |
| Major third | G♯6 | 1.661 kHz | 5:4 |
| Perfect fourth | A6 | 1.76 kHz | 4:3 |
| Tritone | A♯6 | 1.865 kHz | 45:32 |
| Perfect fifth | B6 | 1.976 kHz | 3:2 |
| Minor sixth | C7 | 2.093 kHz | 8:5 |
| Major sixth | C♯7 | 2.217 kHz | 5:3 |
| Minor seventh | D7 | 2.349 kHz | 9:5 |
| Major seventh | D♯7 | 2.489 kHz | 15:8 |
| Octave | E7 | 2.637 kHz | 2:1 |
Instruments and voices that can play E6
Frequently asked questions
What is the frequency of E6?
E6 is 1.319 kHz when A4 = 440 Hz (1.295 kHz if A4 = 432 Hz).
What MIDI number is E6?
E6 is MIDI note number 88.
Is E6 on a piano?
Yes – it is key 68 of 88.