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New Released in April 2026

F Sharp Diminished Triad Inversions on Guitar: 12 Shapes

F#dim triad inversions on guitar: the three notes F#, A and C on three neighbouring strings, in three positions on each of four string sets. Twelve small shapes that cover the whole neck.

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  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
  • Computer, phone or tablet
×××
F#dim A C F#

Three orders of the same three notes

The notes never change, only their order. With A or C at the bottom, F#dim sounds lighter and lets the melody note on top change.

Tense and unstable: it wants to move to the next chord.

From one shape to the next

On the G-B-e strings, the shapes go up the neck in this order: 1st inversion (fret 2) → 2nd inversion (fret 7) → root position (fret 11). The top notes along the way are F#, A, C.

One area of the neck, near fret 9, already holds four F#dim shapes: G-B-e strings 5-7-5; D-G-B strings 7-5-7; A-D-G strings 9-7-5; E-A-D strings 8-9-7.

Where F#dim sits on the neck

Each row uses three neighbouring strings and climbs the neck from the lowest shape to the highest. Mute or skip the other strings.

G-B-e strings

×××
F#dim A C F#

1st inversion

5fr×××
F#dim C F# A

2nd inversion

8fr×××
F#dim F# A C

Root position

D-G-B strings

×××
F#dim F# A C

Root position

5fr×××
F#dim A C F#

1st inversion

10fr×××
F#dim C F# A

2nd inversion

A-D-G strings

×××
F#dim C F# A

2nd inversion

5fr×××
F#dim F# A C

Root position

10fr×××
F#dim A C F#

1st inversion

E-A-D strings

×××
F#dim A C F#

1st inversion

7fr×××
F#dim C F# A

2nd inversion

10fr×××
F#dim F# A C

Root position

Make F#dim triads automatic

  1. Start with the G-B-e strings only: three shapes, one minute each.
  2. Climb the neck through the three shapes and come back down without stopping.
  3. Pick one fret area, around fret 9, and find F#dim on every string set without moving your hand far.
  4. Last, switch between F#dim and another triad in the same area of the neck.

Small daily sessions work best: shapes stick by repetition.

F#dim inversions: the frets

String setRoot position1st inversion2nd inversion
G-B-e stringsx x x 11 10 8x x x 2 1 2x x x 5 7 5
D-G-B stringsx x 4 2 1 xx x 7 5 7 xx x 10 11 10 x
A-D-G stringsx 9 7 5 x xx 12 10 11 x xx 3 4 2 x x
E-A-D strings14 12 10 x x x5 3 4 x x x8 9 7 x x x

Frets from the low E string to the high E string; x = string not played.

ChordRunner game screen with a chord to play on guitar

Test F#dim with your guitar

In ChordRunner chord names come one after another and the microphone checks every chord you play, open shape, barre or triad. It runs in the browser.

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Guitar chord chart · Chord inversions · Guitar chord game

Common questions

What are the inversions of F#dim on guitar?

Root position (F# at the bottom), 1st inversion (A at the bottom) and 2nd inversion (C at the bottom). On the top three strings: 1st inversion 2-1-2; 2nd inversion 5-7-5; Root position 11-10-8.

Which F#dim triad shape is the easiest?

Usually the lowest one on the top strings, 2-1-2, because it sits near the nut.

What does a F#dim triad sound like?

Tense and unstable: it wants to move to the next chord.

Can I practise F#dim with a game that listens to my guitar?

Yes. ChordRunner hears your guitar through the microphone and checks the chord in any shape or inversion. A USB MIDI keyboard works too.

Your instrument is the controller.

ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.

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