1567.98Hz
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1.568 kHzFrequency at A4 = 440 Hz
91MIDI note number
71Piano key (of 88)
21.9 cmWavelength in air
About G6
G6 has a frequency of 1.568 kHz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 91 and key number 71 on an 88-key piano.
In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so G6 is 22 semitones above A4: f = 440 × 2^((91 − 69) / 12) = 1,567.98 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.
G6 frequency in different tunings
| Tuning reference | G6 frequency |
|---|---|
| A4 = 440 Hz (ISO 16 standard) | 1.568 kHz |
| A4 = 442 Hz (many European orchestras) | 1.575 kHz |
| A4 = 443 Hz (Berlin, Vienna) | 1.579 kHz |
| A4 = 435 Hz (French diapason normal, 1859) | 1.55 kHz |
| A4 = 432 Hz (alternative tuning) | 1.539 kHz |
| A4 = 415 Hz (Baroque pitch) | 1.479 kHz |
| C4 = 256 Hz (scientific pitch) | 1.534 kHz |
Intervals from G6
| Interval | Note | Frequency | Ratio (just) |
|---|---|---|---|
| Minor second | G♯6 | 1.661 kHz | 16:15 |
| Major second | A6 | 1.76 kHz | 9:8 |
| Minor third | A♯6 | 1.865 kHz | 6:5 |
| Major third | B6 | 1.976 kHz | 5:4 |
| Perfect fourth | C7 | 2.093 kHz | 4:3 |
| Tritone | C♯7 | 2.217 kHz | 45:32 |
| Perfect fifth | D7 | 2.349 kHz | 3:2 |
| Minor sixth | D♯7 | 2.489 kHz | 8:5 |
| Major sixth | E7 | 2.637 kHz | 5:3 |
| Minor seventh | F7 | 2.794 kHz | 9:5 |
| Major seventh | F♯7 | 2.96 kHz | 15:8 |
| Octave | G7 | 3.136 kHz | 2:1 |
Instruments and voices that can play G6
Frequently asked questions
What is the frequency of G6?
G6 is 1.568 kHz when A4 = 440 Hz (1.539 kHz if A4 = 432 Hz).
What MIDI number is G6?
G6 is MIDI note number 91.
Is G6 on a piano?
Yes – it is key 71 of 88.