G8
6,271.927Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
115
Piano key
—
Octave
8
Frequency
6,271.927 Hz
Period
0.1594 ms
Wavelength
0.0547 m
Pitch class
G
Notation
SPN
MIDI is the note number synths and software pass around (0–127). Pitch class is the note without its octave — all the Gs share one. This note falls outside the 88-key piano, so it has no piano key number.
At other reference pitches
| Reference (A4) | G8 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 6,157.892 Hz | the alternative-tuning circle |
| 440 Hzstandard | 6,271.927 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 6,300.436 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 6,314.69 Hz | some sharper continental orchestras |
Every row is G8 — only the A4 you tune to changes. A frequency scales straight with the reference: G8 at 432 Hz is the 440 Hz value times 432⁄440.
Move around
Every G
Chords with G in them
G appears in each of these — see the whole chord grid.