F chord inversions
F/A and F/C are the first and second inversions of the F major. This means that the bass tone is shifting from F to A or C. Both these chords are also referred to as slash chords.
F/A
F/C
Try in a chord progression
F/A - Bb - C - Dm
F/C - Bb - Am
Theory of the F/A and F/C chords
Both chords consist of the notes F, A, C. The difference is that the order of notes shifts. A is the bass note in the first inversion and C is the bass note in the second inversion. A comparison between the main F major and the two inversions can be seen below.
Alternative fingerings
F/C can be played as a normal F barre form (133211), but without including the low bass string (X33211). An easier fingering is possible for F/C as X3321X, which is suitable in a progression such as C - Csus4 - F/C.
Alternative chord names
F/A is identical with Am#5.
F/C is identical with C6sus4.
See also F7 inversions | Fmaj7 inversions
Chord construction
F x - x - F - A - C - EF/A x -A - F - A - C - E
F/C x - C - F - A - C - E
Guitar versions of the chord
Notes in chord
F F - A - CF/A A - C - F
F/C C - F - A
Only the order of notes differs