Adim7 chord on ukulele

Adim7 is A, C, E♭ and G♭. The usual shape is 2-3-2-3. Hit Play and watch each string light as it sounds.

2-3-2-3 · movable · medium

Notes: A · C · E♭ · G♭
Formula: 1 · ♭3 · ♭5 · ♭♭7
First shape: 2-3-2-3

How to play Adim7 on ukulele

Shape 1, 2-3-2-3, reading from the G string on the left, starts at the 2nd fret:

A: index finger, 2nd fret of the G string.
G♭: middle finger, 2nd fret of the E string.
E♭: ring finger, 3rd fret of the C string.
C: pinky finger, 3rd fret of the A string.

This shape uses your pinky. It feels weak at first; press with the tip and let the finger stay curved.
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 Adim7

5-6-5-6: movable shape at the 5th fret, medium. Same notes, stacked differently, so it sounds a little different.
8-9-8-9: movable shape at the 8th fret, medium. A high voicing for when the low version is taken by another instrument.
11-12-11-12: movable shape at the 11th fret, medium. Up the neck the chord gets thinner and brighter, a good contrast to the open version.

Adim7 chord changes

These are the changes you'll meet most often with Adim7, using the first shape of each chord.

B♭ (leads up a half step): Adim7 (2-3-2-3) to B♭ (3-2-1-1): the index finger goes to the E string, 1st fret, the middle finger goes to the A string, 1st fret, your ring finger lands on the C string, 2nd fret. Everything moves: lift the whole hand and place the new shape in one go. B♭ on ukulele
B♭m (leads up a half step): Adim7 (2-3-2-3) to B♭m (3-1-1-1): the index finger goes to the C string, 1st fret, the middle finger goes to the E string, 1st fret, your ring finger lands on the A string, 1st fret. No finger can stay, so practice lifting all of them together and landing the new shape as a unit. B♭m on ukulele
D (a fifth down): Adim7 (2-3-2-3) to D (2-2-2-0): your index finger stays put, the middle finger slides across to the C string at the same fret, your ring finger lands on the E string, 2nd fret. The two chords share A and G♭, which is why the change sounds smooth. D on ukulele

Adim7 is a diminished seventh: three minor thirds stacked, so the chord divides the octave into four equal parts. All 4 notes of Adim7 fit on the ukulele's four strings. The slow arpeggio button above makes that quality easy to hear.

Getting Adim7 under your fingers

Pick shape 1 one string at a time, low to high: A, E♭, G♭, C. Every note should ring clearly; if one thuds, adjust that finger before you strum. Then switch to 5-6-5-6 and back four times without looking at your hand.

Where Adim7 shows up

Adim7 on guitar and piano

The same notes on another instrument: Adim7 on guitar and Adim7 on piano. This page puts all three side by side.

Related A chords on ukulele

Other diminished seventh chords

Adim7 on ukulele: questions

What notes are in Adim7 on ukulele?

A, C, E♭ and G♭. In the 2-3-2-3 shape the strings play A (G string), E♭ (C string), G♭ (E string) and C (A string).

What's the easiest way to play Adim7 on ukulele?

Adim7 has no open-string shape in standard tuning, so every version needs a barre or a stretch. Start with 2-3-2-3. It uses 4 fingers and no barre, and a capo can make it easier in some songs.

Is Adim7 a barre chord on ukulele?

Not in its common form: 2-3-2-3 needs no barre.

Which string does Adim7 start on?

In the 2-3-2-3 shape the lowest string you play is the G string at the 2nd fret, which is A, the root.

Checked automatically: no shape here plays a note outside Adim7. Updated September 2026.