C# major
Notes C♯ – E♯ – G♯
Formula 1 3 5
C# Chords
Root
C#
C♯ major
- Notes
- C♯ – E♯ – G♯
- Formula
- 135
9 11 11 10 9 9× 4 6 6 6 4Chord finder
Tap keys to build a chord; the name appears here.
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Practice aid. Pitch follows A4 = 440 Hz (ISO 16:1975) in equal temperament; clicks are timed on the audio clock, and your device adds a fixed output delay. Checked 2026-10-23. ISO 16:1975 · Disclaimer
All 20 chord types built on C#. The notes of the C# major scale are D♭ E♭ F G♭ A♭ B♭ C; each chord takes some of them and changes one or two.
Chords in the key of C# major
The seven chords built from the major scale, the ones most songs in this key use.
IDbiiEbmiiiFmIVGbVAbviBbmvii°Cdim
Piano Chords: C#
C#m minor
Notes C♯ – E – G♯
Formula 1 ♭3 5
C#7 dominant 7th
Notes C♯ – E♯ – G♯ – B
Formula 1 3 5 ♭7
C#maj7 major 7th
Notes C♯ – E♯ – G♯ – B♯
Formula 1 3 5 7
C#m7 minor 7th
Notes C♯ – E – G♯ – B
Formula 1 ♭3 5 ♭7
C#sus2 suspended 2nd
Notes C♯ – D♯ – G♯
Formula 1 2 5
C#sus4 suspended 4th
Notes C♯ – F♯ – G♯
Formula 1 4 5
C#dim diminished
Notes C♯ – E – G
Formula 1 ♭3 ♭5
C#aug augmented
Notes C♯ – E♯ – G♯♯
Formula 1 3 ♯5
C#6 major 6th
Notes C♯ – E♯ – G♯ – A♯
Formula 1 3 5 6
C#m6 minor 6th
Notes C♯ – E – G♯ – A♯
Formula 1 ♭3 5 6
C#add9 add 9
Notes C♯ – E♯ – G♯ – D♯
Formula 1 3 5 9
C#9 dominant 9th
Notes C♯ – E♯ – G♯ – B – D♯
Formula 1 3 5 ♭7 9
C#m9 minor 9th
Notes C♯ – E – G♯ – B – D♯
Formula 1 ♭3 5 ♭7 9
C#maj9 major 9th
Notes C♯ – E♯ – G♯ – B♯ – D♯
Formula 1 3 5 7 9
C#m7b5 half-diminished
Notes C♯ – E – G – B
Formula 1 ♭3 ♭5 ♭7
C#dim7 diminished 7th
Notes C♯ – E – G – B♭
Formula 1 ♭3 ♭5 𝄫7
C#7sus4 7th suspended 4th
Notes C♯ – F♯ – G♯ – B
Formula 1 4 5 ♭7
C#m(maj7) minor-major 7th
Notes C♯ – E – G♯ – B♯
Formula 1 ♭3 5 7
C#5 power chord
Notes C♯ – G♯
Formula 1 5