The standard grips this chord is usually shown with.
F#11 is F#, C#, E, G# and B — F#9 with the eleventh added, and the third usually dropped.
It sounds suspended rather than tense. The eleventh sits a semitone above the major third, so the third is usually dropped; some shapes here keep it anyway.

| F# | C# | E | G# | B |
|---|---|---|---|---|
| 1 | 5 | ♭7 | 9 | 11 |
Dominant — but effectively a sus chord with a ninth.
Also written F#9sus4 or F# dominant 11. The same chord either way; which spelling you meet depends on who wrote the chart.
F#11 in 9th in bass puts G# in the bass instead of F#, the 9th of the chord. The notes are the same; what changes is what the bass line does, which is most of why you would reach for it — it lets the lowest voice move by step where the root would have jumped.
One of F#11’s 6 common shapes does this: 444456.
Start with 212100 — no barre and 2 open strings. 1 of the 6 shapes here sits in open position. 3 of the 6 need a barre. Together they cover the neck from the 1st fret to the 13th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| 212100 | open position | F#, root position | E | 2 open strings |
| 222322 | 2nd fret | F#, root position | F# | barred |
| 444456 | 4th fret | G#, 9th in the bass | Bb | barred |
| x98977 | 7th fret | F#, root position | B | all fretted |
| x-9-9-9-11-9 | 9th fret | F#, root position | C# | barred |
| x-13-11-11-12-12 | 11th fret | A# | E | all fretted |
The same notes rebuilt from scratch give 24 drop 2, 16 drop 3, 14 rootless and 4 open string voicings, each on its own page.
F#11 is the V of B, and that is where it goes if it goes anywhere: the third and the flat seventh are a tritone apart, and both resolve by a semitone into B.
Voice by voice, F#11 → B. One voice moves by a semitone, and 2 notes are common to both chords.
| In F#11 | Moves | In B |
|---|---|---|
| F#, the root | stays where it is | F#, the fifth |
| C#, the fifth | falls a whole tone | B, the root |
| E, the flat seventh | falls a semitone | D#, the major third |
| G#, the ninth | falls a whole tone | F#, the fifth |
| B, the eleventh | stays where it is | B, the root |
In which keys. Every note of F#11 belongs to C# minor (the iv), E major (the ii), F# minor (the i), Ab minor (the ♭VII), A major (the vi) and B major (the V).
Every note of F#11 is in F# mixolydian, F# dorian and F# natural minor.
Change one note of F#11 and you have F#sus2sus4 (drop the flat seventh), F#m9 (the fourth becomes a minor third), F#m11 (add the minor third), F#7sus4 (drop the ninth) or F#9 (the fourth becomes a major third).
F#11 is a dominant chord — root, major third, fifth, minor seventh. Dominant seventh chords on every root.
On F#11’s sound and use this page follows Barrie Nettles & Richard Graf, The Chord Scale Theory and Jazz Harmony (Advance Music, 1997). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.