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Musical note · Octave 2

G2

G2 = 98 Hz. Play the note, see it in other tunings, find it on piano and guitar, and explore its intervals.

98.0Hz

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98 HzFrequency at A4 = 440 Hz
43MIDI note number
23Piano key (of 88)
3.50 mWavelength in air

About G2

G2 has a frequency of 98 Hz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 43 and key number 23 on an 88-key piano.

In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so G2 is 26 semitones below A4: f = 440 × 2^((43 − 69) / 12) = 98.00 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.

G2 frequency in different tunings

Tuning referenceG2 frequency
A4 = 440 Hz (ISO 16 standard)98 Hz
A4 = 442 Hz (many European orchestras)98.44 Hz
A4 = 443 Hz (Berlin, Vienna)98.67 Hz
A4 = 435 Hz (French diapason normal, 1859)96.89 Hz
A4 = 432 Hz (alternative tuning)96.22 Hz
A4 = 415 Hz (Baroque pitch)92.43 Hz
C4 = 256 Hz (scientific pitch)95.89 Hz

Where to play G2 on a guitar

Standard tuning (E A D G B E), frets 0–22.

  • 6th string (low E), fret 3

Intervals from G2

IntervalNoteFrequencyRatio (just)
Minor secondG♯2103.83 Hz16:15
Major secondA2110 Hz9:8
Minor thirdA♯2116.54 Hz6:5
Major thirdB2123.47 Hz5:4
Perfect fourthC3130.81 Hz4:3
TritoneC♯3138.59 Hz45:32
Perfect fifthD3146.83 Hz3:2
Minor sixthD♯3155.56 Hz8:5
Major sixthE3164.81 Hz5:3
Minor seventhF3174.61 Hz9:5
Major seventhF♯3185 Hz15:8
OctaveG3196 Hz2:1

Instruments and voices that can play G2

Frequently asked questions

What is the frequency of G2?

G2 is 98 Hz when A4 = 440 Hz (96.22 Hz if A4 = 432 Hz).

What MIDI number is G2?

G2 is MIDI note number 43.

Is G2 on a piano?

Yes – it is key 23 of 88.

Where is G2 on the guitar?

In standard tuning: 6th string (low E), fret 3.