Chord Calculator
Find the notes in any chord.
Select a root note and chord type to see the notes that make up the chord.
Chord Notes
Chords are built by stacking intervals on top of a root note. Each chord type has a specific formula of semitone intervals.
Chord formulas (semitones from root):
- Major: 0, 4, 7
- Minor: 0, 3, 7
- Diminished: 0, 3, 6
- Augmented: 0, 4, 8
- Major 7th: 0, 4, 7, 11
- Minor 7th: 0, 3, 7, 10
- Dominant 7th: 0, 4, 7, 10
- Suspended 2nd (sus2): 0, 2, 7
- Suspended 4th (sus4): 0, 5, 7
- Power (5th): 0, 7
The chromatic scale: C, C#, D, D#, E, F, F#, G, G#, A, A#, B
Example — C Major: Start on C (0), go up 4 semitones (E), go up 7 semitones (G) → C, E, G
Example — A Minor 7th: Start on A (0), +3 (C), +7 (E), +10 (G) → A, C, E, G