The F♯ 11 Chord Explained
F-sharp eleventh is a Dominant chord family chord built from the notes F♯, A♯, C♯, E, G♯, and B. Its root is F♯, and its interval number formula is 1–3–5–♭7–9–11. In interval names, that gives you root, major third, perfect fifth, minor seventh, major ninth, and perfect eleventh. You may also see it written as F♯11, F#11, or F-sharp dominant eleventh. If you look at the widget above, you can use it to spot each chord tone and hear how these stacked intervals create a richer sound; if you want to learn more about how chords are built, see understanding chord intervals.
F♯ 11 Alternate Names
- F♯11
- F#11
- F-sharp dominant eleventh
F♯ 11 Chord Notes
F♯ 11 Chord Formula
F♯ 11 Chord Notation
How To Use F♯ 11 In Music
Because it contains both a strong dominant pull and extra color tones, F♯11 sounds tense, spacious, and slightly bluesy or jazzy. It often wants to resolve to a chord built a fifth below, so it commonly leads to B major or B minor. For example, in the key of B major, you might hear ii–V–I as C♯m7–F♯11–Bmaj7, where V creates motion back to I. In a longer progression, vi–ii–V–I could be G♯m7–C♯m7–F♯11–Bmaj7. The mood of the chord can feel smoother in a jazz setting, brighter next to major chords, or darker when surrounded by minor harmony. Since it belongs to the dominant family, it shares some of the forward-driving energy explained in what is a dominant chord.
F♯ 11 Chord Inversions
Another useful idea for beginners is inversion, which means putting a note other than the root at the bottom. For F♯11, root position has F♯ as the lowest note, while inversions could place A♯, C♯, E, G♯, or B in the bass. An F♯11 with A♯ in the bass can sound a little lighter and less grounded, while one with E in the bass can emphasize the dominant seventh tension more clearly. Players and arrangers use inversions to make chord changes smoother, connect bass lines step by step, or highlight a certain color inside the chord. You may also hear simplified variations of F♯11 that leave out the fifth or even the ninth, because extended chords are often trimmed in real music to make them easier to play while keeping their essential character.
