F# Diminished Triads on Guitar — Shapes & Inversions

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The F# Diminished triad is F#–A–C — R–b3–b5. Below you'll find all 11 close-voiced shapes within the first 12 frets: every inversion on every string set, color-coded and verified by the engine that powers our trainer.

F#
R
root
A
b3
minor third
C
b5
diminished fifth
Root position (R in bass)1st inversion (3rd in bass)2nd inversion (5th in bass)

F# Diminished triads — all positions

Strings 1·2·3 (e · B · G)

3 5 7 9 12 15 R b5 b3 b3 R b5 b5 b3 R

Strings 2·3·4 (B · G · D)

3 5 7 9 12 15 b5 b3 R R b5 b3 b3 R b5

Strings 3·4·5 (G · D · A)

3 5 7 9 12 15 b3 R b5 b5 b3 R R b5 b3

Strings 4·5·6 (D · A · E)

3 5 7 9 12 15 R b5 b3 b3 R b5

Where Each Inversion Sits

Strings 1·2·31st inversion — fret 12nd inversion — fret 5root position — fret 8
Strings 2·3·4root position — fret 11st inversion — fret 52nd inversion — fret 10
Strings 3·4·52nd inversion — fret 2root position — fret 51st inversion — fret 10
Strings 4·5·61st inversion — fret 32nd inversion — fret 7
Download PDF — F# chart (all qualities)Open the full triads chart

How to Practice F# Diminished Triads

Play the shapes on one string set from the nut up: 1st inversion at fret 1 first, then the next inversion, then the next — say the inversion out loud as you land on it. Then lock one fret region and switch between string sets instead. When the shapes come without thinking, test yourself in the trainer: it will flash F# Diminished voicings for you to name, or name them for you to find.

Frequently Asked Questions

What notes are in the F# Diminished triad?

F# (root), A (minor third), C (diminished fifth).

How many F# Diminished triad shapes are there on guitar?

Within the first 12 frets there are 11 close-voiced shapes: root position, 1st and 2nd inversions spread across the four three-string sets. Above the 12th fret the same shapes repeat an octave higher.

What is an easy F# Diminished triad shape to start with?

Start on strings 1·2·3 with the lowest shape on the neck (1st inversion at fret 1) — three notes, no barre, and the same grip moves to every other key.

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