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About G5
G5 has a frequency of 783.99 Hz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 79 and key number 59 on an 88-key piano.
In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so G5 is 10 semitones above A4: f = 440 × 2^((79 − 69) / 12) = 783.99 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.
G5 frequency in different tunings
| Tuning reference | G5 frequency |
|---|---|
| A4 = 440 Hz (ISO 16 standard) | 783.99 Hz |
| A4 = 442 Hz (many European orchestras) | 787.55 Hz |
| A4 = 443 Hz (Berlin, Vienna) | 789.34 Hz |
| A4 = 435 Hz (French diapason normal, 1859) | 775.08 Hz |
| A4 = 432 Hz (alternative tuning) | 769.74 Hz |
| A4 = 415 Hz (Baroque pitch) | 739.45 Hz |
| C4 = 256 Hz (scientific pitch) | 767.13 Hz |
Where to play G5 on a guitar
Standard tuning (E A D G B E), frets 0–22.
- 2nd string (B), fret 20
- 1st string (high E), fret 15
Intervals from G5
| Interval | Note | Frequency | Ratio (just) |
|---|---|---|---|
| Minor second | G♯5 | 830.61 Hz | 16:15 |
| Major second | A5 | 880 Hz | 9:8 |
| Minor third | A♯5 | 932.33 Hz | 6:5 |
| Major third | B5 | 987.77 Hz | 5:4 |
| Perfect fourth | C6 | 1.047 kHz | 4:3 |
| Tritone | C♯6 | 1.109 kHz | 45:32 |
| Perfect fifth | D6 | 1.175 kHz | 3:2 |
| Minor sixth | D♯6 | 1.245 kHz | 8:5 |
| Major sixth | E6 | 1.319 kHz | 5:3 |
| Minor seventh | F6 | 1.397 kHz | 9:5 |
| Major seventh | F♯6 | 1.48 kHz | 15:8 |
| Octave | G6 | 1.568 kHz | 2:1 |
Instruments and voices that can play G5
Frequently asked questions
What is the frequency of G5?
G5 is 783.99 Hz when A4 = 440 Hz (769.74 Hz if A4 = 432 Hz).
What MIDI number is G5?
G5 is MIDI note number 79.
Is G5 on a piano?
Yes – it is key 59 of 88.
Where is G5 on the guitar?
In standard tuning: 2nd string (B), fret 20; 1st string (high E), fret 15.