F Suspended 2nd Chord

Chord Tones: F Suspended 2nd Chord

Symbol: sus2 — Formula: 1-2-5

DegreeNoteFrequency (A=440, Equal)
1 F 349.228 Hz
2 G 391.995 Hz
5 C 261.626 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolFsus2
All Common Symbolssus2
Interval Formula1-2-5
Harmonic Categoryopen

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

InversionNotes (low to high)Bass NoteSlash Notation
Root Position F G C F F Suspended 2nd Chord
First Inversion G C F G F Suspended 2nd Chord/G
Second Inversion C F G C F Suspended 2nd Chord/C

Harmonic Function

The F sus2 chord commonly functions as the subdominant (IV) in C major — plagal cadence endpoint. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.

The sus2 chord replaces the third with a major second, creating an open, ambiguous sound with no major or minor quality. It is widely used in rock and pop for its airy, unresolved character.

Common Progressions

The F Suspended 2nd Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

Songs Featuring the Suspended 2nd Chord

Well-known songs where the F Suspended 2nd Chord — or this chord type — plays a prominent role:

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

NoteEqual Temp.PythagoreanJust Intonation
F 349.228 Hz 347.654 Hz 348.834 Hz
G 391.995 Hz 391.111 Hz 392.438 Hz
C 261.626 Hz 260.740 Hz 261.626 Hz

Scales Containing the F Suspended 2nd Chord

These scales include the F Suspended 2nd Chord as a diatonic or characteristic chord: