The F♯ 13 Chord Explained
F-sharp thirteen is a Dominant chord built from the notes F♯, A♯, C♯, E, G♯, B, and D♯. Its root is F♯, which is the note the chord is named after, and you can learn more about that in this guide to chord roots. The interval number formula is 1–3–5–♭7–9–11–13, and those intervals are called the root, major third, perfect fifth, minor seventh, major ninth, perfect eleventh, and major thirteenth. Although this full seven-note spelling is called F-sharp thirteen in plain text, it may also appear as F♯13, F#13, or as a dominant thirteenth chord built on F-sharp.
F♯ 13 Alternate Names
- F♯13
- F#13
- F-sharp dominant thirteenth
F♯ 13 Chord Notes
F♯ 13 Chord Formula
F♯ 13 Chord Notation
How To Use F♯ 13 In Music
Because it is a dominant-family chord, F-sharp thirteen has a bright but tense sound that feels rich, jazzy, and ready to move somewhere else. The added 9th, 11th, and 13th give it extra color beyond a basic seventh chord, so it can sound smooth in soul, funk, jazz, pop, and gospel. Its mood often depends on the chords around it: on its own it can sound complex and energetic, but when it resolves it can feel satisfying and warm. For example, in the key of B major, F♯13 commonly works as V in a ii–V–I progression such as C♯m7–F♯13–Bmaj7, or in a longer movement like vi–ii–V–I. If you want to understand why this chord creates such pull, this overview of dominant chords is helpful.
F♯ 13 Chord Inversions
Another useful idea is inversion, which means the chord keeps the same notes but starts on a note other than the root. For F-sharp thirteen, a player might place A♯, C♯, E, or another chord tone in the bass instead of F♯, creating a different balance and a smoother connection to nearby chords. Inversions can make the chord sound lighter, darker, less grounded, or more flowing depending on which note is lowest. Musicians use them to improve voice-leading, reduce jumps in the bass, and shape the emotional direction of a progression. In practice, full 13th chords are often simplified too, sometimes leaving out the 5th, 11th, or even the root when another instrument is covering it, while still keeping the dominant 13th color.
