Chord · F# Suspended 4th
F♯sus4 Chord
F♯sus4 is F#, B and C# — tense, wants to resolve to the major.
F♯sus4 on every instrument
The same 3 notes, 6 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What F♯sus4 is made of
F# Suspended 4th (F# suspended 4th) is built from the notes F#, B, C#, with the interval pattern 1, 4, 5. A common suspended 4th chord across many styles.
Stack 1, 4 and 5 on a root of F♯ and you get F#, B and C#. That interval recipe is what makes the chord a suspended fourth chord — move the same shape to another root and the character travels with it, which is why Csus4 sounds like a transposed F♯sus4.
Suspended 4th: Tense, wants to resolve to the major.
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 F♯ rather than its enharmonic equivalent.
Keys that contain F♯sus4
All 3 notes sit inside the scale of 14 keys. The roman numeral marks the degree the chord is rooted on.
Major keys
Other chords on F♯
Same root, different colour.
The same suspended fourth shape, moved
The identical interval recipe, built on other roots.
Questions people ask about F#sus4
- What notes are in the F#sus4 chord?
- F#sus4 is made of F#, B and C# — the 1, 4 and 5 degrees of a suspended fourth chord built on F#.
- What keys use the F#sus4 chord?
- Every note of F#sus4 belongs to 14 keys: D Major (iii), A Major (vi), E Major (ii), B Major (V), F# Major (I), Gb Major (I), Cb Major (V), B Minor (v), F# Minor (i), C# Minor (iv), G# Minor (VII), D# Minor (III), Eb Minor (III), Ab Minor (VII). The roman numeral is the scale degree the chord is rooted on.
- How do you play F#sus4 on guitar and piano?
- This page shows F#sus4 on guitar, piano, ukulele, bass, mandolin and banjo — 9 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
- Is F#sus4 the same as Gbsus4?
- Yes. F#sus4 and Gbsus4 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; F#sus4 is the spelling this site treats as canonical.
Learn the theory behind it
Why F♯sus4 behaves the way it does — the guides that explain the chord instead of just spelling it.