G♯dim7 chord on ukulele

G♯dim7 is G♯, B, D and F. The usual shape is 1-2-1-2. Play it once at full speed, then at a quarter to hear every note.

1-2-1-2 · movable · medium

Notes: G♯ · B · D · F
Formula: 1 · ♭3 · ♭5 · ♭♭7
First shape: 1-2-1-2

How to play G♯dim7 on ukulele

Shape 1, 1-2-1-2, reading from the G string on the left:

Put your index finger on the G string at the 1st fret, which is G♯.
Put your middle finger on the E string at the 1st fret, which is F.
Put your ring finger on the C string at the 2nd fret, which is D.
Put your pinky finger on the A string at the 2nd fret, which is B.

This shape uses your pinky. It feels weak at first; press with the tip and let the finger stay curved.
Strum with the pad of your index finger or thumb, all four strings, across the spot where the neck meets the body.

Other ways to play G♯dim7

4-5-4-5: movable shape at the 4th fret, medium. Same notes, stacked differently, so it sounds a little different.
7-8-7-8: movable shape at the 7th fret, medium. Higher up the neck it sounds brighter; handy when another guitar is already playing a lower shape.
10-11-10-11: movable shape at the 10th fret, medium. A high voicing for when the low version is taken by another instrument.

G♯dim7 chord changes

The chords G♯dim7 usually goes to, and what changes under your fingers.

A (leads up a half step): G♯dim7 (1-2-1-2) to A (2-1-0-0): the index finger slides across to the C string at the same fret, move the middle finger to the G string, 2nd fret. A on ukulele
Am (leads up a half step): G♯dim7 (1-2-1-2) to Am (2-0-0-0): move the index finger to the G string, 2nd fret. Am on ukulele
C♯ (a fifth down): G♯dim7 (1-2-1-2) to C♯ (6-5-4-4): the index finger goes to the E string, 4th fret, move the middle finger to the A string, 4th fret, your ring finger lands on the C string, 5th fret. Everything moves: lift the whole hand and place the new shape in one go. Listen for G♯ and F, which stay put while the rest moves. C♯ on ukulele

G♯dim7 is a diminished seventh: three minor thirds stacked, so the chord divides the octave into four equal parts. All 4 notes of G♯dim7 fit on the ukulele's four strings. Play it once strummed and once picked to hear the difference.

Getting G♯dim7 under your fingers

Arpeggiate 1-2-1-2 from the lowest string: G♯, D, F, B. Then strum it and listen for the same 4 notes together. Next, alternate 1-2-1-2 and 4-5-4-5, slowly, until the change takes less than a beat.

A♭dim7 is another spelling of G♯dim7. Same shape, same sound.

G♯dim7 in context

G♯dim7 on guitar and piano

Switching instruments? Try G♯dim7 on piano or G♯dim7 on guitar, or compare them on the G♯dim7 chord page.

Close to G♯dim7

Other diminished seventh chords

G♯dim7 on ukulele: questions

What notes are in G♯dim7 on ukulele?

G♯, B, D and F. In the 1-2-1-2 shape the strings play G♯ (G string), D (C string), F (E string) and B (A string).

What's the easiest way to play G♯dim7 on ukulele?

G♯dim7 has no open-string shape in standard tuning, so every version needs a barre or a stretch. Start with 1-2-1-2. It uses 4 fingers and no barre, and in many songs a capo can take over part of the work.

Is G♯dim7 a barre chord on ukulele?

Not the usual shape: 1-2-1-2 needs no barre.

Which string does G♯dim7 start on?

In the 1-2-1-2 shape the lowest string you play is the G string at the 1st fret, which is G♯, the root.

Checked automatically: no shape here plays a note outside G♯dim7. Updated September 2026.