Gdim7 chord on ukulele

Gdim7 is G, B♭, D♭ and F♭. The easiest shape is 0-1-0-1. Tap Play, then slow it down.

0-1-0-1 · open · easy

Notes: G · B♭ · D♭ · F♭
Formula: 1 · ♭3 · ♭5 · ♭♭7
First shape: 0-1-0-1

How to play Gdim7 on ukulele

Shape 1, 0-1-0-1, reading from the G string on the left:

Put your index finger on the C string at the 1st fret, which is D♭.
Put your middle finger on the A string at the 1st fret, which is B♭.
The open G and E strings add G and F♭; don't touch them.

Arch your fingers so their tips come down vertically. That keeps them off the open strings, which have to ring for the chord to sound complete.
On ukulele you strum all four strings. The top G string is tuned higher than the C, which is why ukulele chords sound bright and close.

Other ways to play Gdim7

6-7-6-7: movable shape at the 6th fret, medium. A different set of strings gives a different color of the same chord.
9-10-9-10: movable shape at the 9th fret, medium. Up the neck the chord gets thinner and brighter, a good contrast to the open version.

Changing from Gdim7 to the chords around it

These are the changes you'll meet most often with Gdim7, using the first shape of each chord.

A♭ (leads up a half step): Gdim7 (0-1-0-1) to A♭ (1-3-4-3): the index finger slides across to the G string at the same fret, your middle finger lands on the C string, 3rd fret, the ring finger comes down on the A string, 3rd fret, the pinky finger comes down on the E string, 4th fret. Everything moves: lift the whole hand and place the new shape in one go. A♭ on ukulele
G♯m (leads up a half step): Gdim7 (0-1-0-1) to G♯m (4-3-4-2): the index finger goes to the A string, 2nd fret, the middle finger goes to the C string, 3rd fret, the ring finger comes down on the G string, 4th fret, the pinky finger comes down on the E string, 4th fret. Nothing carries over, so drill it slowly, lifting and landing all fingers at once. G♯m on ukulele
C (a fifth down): Gdim7 (0-1-0-1) to C (0-0-0-3): move the index finger to the A string, 3rd fret. Listen for G and F♭, which stay put while the rest moves. C on ukulele

Gdim7 is a diminished seventh: three minor thirds stacked, so the chord divides the octave into four equal parts. All 4 notes of Gdim7 fit on the ukulele's four strings. The slow arpeggio button above makes that quality easy to hear.

Getting Gdim7 under your fingers

Pick shape 1 one string at a time, low to high: G, D♭, F♭, B♭. Every note should ring clearly; if one thuds, adjust that finger before you strum. Next, alternate 0-1-0-1 and 6-7-6-7, slowly, until the change takes less than a beat.

Keys and progressions with Gdim7

Gdim7 on guitar and piano

The same notes on another instrument: Gdim7 on guitar and Gdim7 on piano. This page puts all three side by side.

Next to try on ukulele

Other diminished seventh chords

Gdim7 on ukulele: questions

What notes are in Gdim7 on ukulele?

G, B♭, D♭ and F♭. In the 0-1-0-1 shape the strings play G (G string, open), D♭ (C string), F♭ (E string, open) and B♭ (A string).

What's the easiest way to play Gdim7 on ukulele?

0-1-0-1, shape 1 above. Open strings do part of the work, so no barre.

Is Gdim7 a barre chord on ukulele?

Not in its common form: 0-1-0-1 needs no barre.

Which string does Gdim7 start on?

In the 0-1-0-1 shape the lowest string you play is the G string, open, which is G, the root.

Every shape above plays only G, B♭, D♭ and F♭, checked by the site's tests. Updated September 2026.