Play ChordRunner

Learn › F Sharp Diminished Chord on Guitar (F#dim)

New Released in April 2026

F Sharp Diminished Chord on Guitar (F#dim)

F sharp diminished (F#dim) on the guitar: press the strings shown below; some strings ring open. Strum all six strings and you hear F#, A, C. Here is the shape, finger by finger, plus the chords you will play next to it.

Play the demo

No account, no download. The demo has limited content. Advanced features are in ChordRunner Premium.

  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
  • Computer, phone or tablet
2fr××
F#dim F# A C

F#dim chord diagram

2fr××
F#dim F# A C

Where each finger goes

  • Middle: 6th string (low E), fret 2
  • Little: 4th string (D), fret 4
  • Ring: 3rd string (G), fret 2
  • Index: 2nd string (B), fret 1

Strings to play

2x421x: × = do not play, 0 = open string.

Chords that go with F#dim

Start with F#: it is the change you will meet most often after F#dim.

F# · B · C#

F#dim string by string

6th string (low E)fret 2: F#
4th string (D)fret 4: F#
3rd string (G)fret 2: A
2nd string (B)fret 1: C

Slide this shape along the neck: fret 1 = Fdim, fret 3 = Gdim, fret 4 = Abdim, fret 5 = Adim.

Practise F#dim in three steps

  1. Place the fingers one at a time, then strum and listen to each string.
  2. Lift the hand, then land all fingers together. Repeat ten times.
  3. Change from F#dim to F# and back for a minute; then add B.

Where F#dim is used

F#dim wants to move up one fret: play F#dim, then G or Gm, and it resolves.

ChordRunner on a phone next to an acoustic guitar, with a chord block on screen

Make F#dim automatic

F#dim turns up between other chords in ChordRunner; strum it on time and the runner jumps. MIDI keyboard or microphone, both work. MIDI keyboard or microphone, both work.

Play the demo

F#dim on piano · Easy guitar chords · Guitar chord game

Common questions

What notes are in the F#dim guitar chord?

F sharp diminished has three notes: F#, A, C. On the guitar some of them are doubled on different strings, so all six (or five) strings sound like one chord.

Which fingers do I use for F#dim?

Middle finger: 6th string (low E), fret 2, little finger: 4th string (D), fret 4, ring finger: 3rd string (G), fret 2, index finger: 2nd string (B), fret 1.

Can I practise F#dim with a microphone or MIDI keyboard?

Both work in ChordRunner. The microphone hears an acoustic or electric guitar; a USB MIDI keyboard is detected automatically. Either way F#, A, C must sound together.

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.

Try the demo

Keep learning

Easy Guitar Chords for Beginners

Easy guitar chords for beginners: Em, Am, C, G, D, E, A and Dm with diagrams, the order to learn them and how …

Guitar Chord Chart: 21 Essential Chords

Guitar chord chart with diagrams: the 7 major, 7 minor and 7 seventh chords guitarists use most, how to read a…

Guitar Chord Game: Practise Chords on Your Guitar

A guitar chord game in your browser: a chord appears, you strum it, the microphone hears it. Practise chord ch…

F Sharp Diminished Chord on Piano (F#dim)

How to play the F sharp diminished chord (F#dim) on piano: F# A C, both hands, three positions and its resolut…

Chord Training That Feels Like a Game

Interactive chord training in your browser. Play major, minor, 7th and extended chords on a MIDI keyboard or a…

Master All 12 Major Chords on Piano

Every major chord on piano with notes and fingering, plus an interactive game that drills all 12 until they ar…