C Major Chord Builder
Learn how chords are built in the C major scale with this interactive chord builder. Select any diatonic chord and watch it appear one note at a time on both the treble staff and the piano keyboard. The app highlights the root, third, and fifth, making it easy to understand chord structure, intervals, and the difference between major, minor, and diminished chords. Listen to every note individually or play the complete chord to strengthen both your music theory knowledge and your ear.
Animated C Major Chord Builder
Choose a chord from the C major scale, then build it one note at a time on the staff and piano keyboard.
Formula: Root + Major 3rd + Perfect 5th
Choose a Chord
Learn the Chords in the C Major Scale
The C major scale contains seven diatonic chords, each built by stacking thirds above a scale note.
- C major (C–E–G)
- D minor (D–F–A)
- E minor (E–G–B)
- F major (F–A–C)
- G major (G–B–D)
- A minor (A–C–E)
- B diminished (B–D–F)
This interactive chord builder lets you see exactly how each chord is constructed. As the notes appear one by one, you’ll learn the role of the root, third, and fifth while connecting the notes on the piano keyboard with their position on the musical staff. It’s an excellent way to develop both visual recognition and a deeper understanding of music theory.