Chord · F# Major (1st Inversion)
F♯/3 Chord
F♯/3 is A#, C# and F# — major triad with the third in the bass.
F♯/3 on every instrument
The same 3 notes, 1 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What F♯/3 is made of
F# Major (1st Inversion) (F# major (1st inversion)) is built from the notes A#, C#, F#, with the interval pattern 3, 5, 1. A common major (1st inversion) chord across many styles.
Stack 3, 5 and 1 on a root of F♯ and you get A#, C# and F#. That interval recipe is what makes the chord a major first inversion chord — move the same shape to another root and the character travels with it, which is why E/3 sounds like a transposed F♯/3.
Major (1st Inversion): Major triad with the third in the bass.
Spelling: the notes above are written the way a score would write them, not simplified to the nearest piano key. That is why this chord is spelled with A♯ rather than its enharmonic equivalent.
Keys that contain F♯/3
All 3 notes sit inside the scale of 12 keys. The roman numeral marks the degree the chord is rooted on.
Major keys
Other chords on F♯
Same root, different colour.
The same major first inversion shape, moved
The identical interval recipe, built on other roots.
Questions people ask about F#/3
- What notes are in the F#/3 chord?
- F#/3 is made of A#, C# and F# — the 3, 5 and 1 degrees of a major first inversion chord built on F#.
- What keys use the F#/3 chord?
- Every note of F#/3 belongs to 12 keys: B Major (V), Db Major (IV), F# Major (I), Gb Major (I), C# Major (IV), Cb Major (V), Bb Minor (VI), G# Minor (VII), D# Minor (III), Eb Minor (III), A# Minor (VI), Ab Minor (VII). The roman numeral is the scale degree the chord is rooted on.
- How do you play F#/3 on guitar and piano?
- This page shows F#/3 on piano — 1 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
- Is F#/3 the same as Gb/3?
- Yes. F#/3 and Gb/3 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; F#/3 is the spelling this site treats as canonical.
Learn the theory behind it
Why F♯/3 behaves the way it does — the guides that explain the chord instead of just spelling it.