Major and Minor Chord Shapes on Piano

Introduction

Chords are the harmonic engine of piano music. A triad is a three-note chord built from a root, third, and fifth. Understanding the shapes and formulas for major and minor triads lets you build chords in any key instantly.

Major Triads

The Formula

Major triad = Root + Major Third + Perfect Fifth
- From root to third: 4 semitones (major third)
- From third to fifth: 3 semitones (minor third)
- From root to fifth: 7 semitones (perfect fifth)

Shape on the Keyboard

• C major: C-E-G — white-white-white (all white keys)
• F major: F-A-C — white-white-white
• G major: G-B-D — white-white-white
• D major: D-F#-A — white-black-white

Visual Pattern

Major chords have a “wide” feel because the major third on top of the root creates a bright, open sound. On the keyboard, the shape alternates between clustered and spread positions depending on the key.

Minor Triads

The Formula

Minor triad = Root + Minor Third + Perfect Fifth
- From root to third: 3 semitones (minor third)
- From third to fifth: 4 semitones (major third)
- From root to fifth: 7 semitones (perfect fifth)

Shape on the Keyboard

• A minor: A-C-E — white-white-white
• E minor: E-G-B — white-white-white
• D minor: D-F-A — white-white-white
• G minor: G-Bb-D — white-black-white

The Critical Difference

The only difference between a major and minor triad is the third. The root and fifth are identical. That one semitone change (3 semitones vs. 4 semitones) transforms the entire emotional character of the chord.

Building Chords in All 12 Keys

C Major: C-E-G

C Minor: C-Eb-G

C# Major: C#-E#(F)-G

C# Minor: C#-E-G

D Major: D-F#-A

D Minor: D-F-A

D# Major: D#-Fx(G)-A

D# Minor: D#-F#-A

E Major: E-G#-B

E Minor: E-G-B

F Major: F-A-C

F Minor: F-Ab-C

F# Major: F#-A#-C

F# Minor: F#-A-C

G Major: G-B-D

G Minor: G-Bb-D

G# Major: G#-B#(C)-D

G# Minor: G#-B-D

A Major: A-C#-E

A Minor: A-C-E

A# Major: A#-Cx(D)-E

A# Minor: A#-C#-E

B Major: B-D#-F

B Minor: B-D-F

Practice Exercise

1. Play each major triad, ascending from C through B.
2. Play each minor triad, ascending from C through B.
3. Alternate: C major → C minor → C# major → C# minor…
4. Focus on the shape of each chord — how your hand feels in position.

Conclusion

Major and minor chord shapes are the building blocks of all harmony. Once you can form any triad in any key without thinking, you have unlocked the ability to play thousands of songs. Practice one new chord per day, and within two weeks you will know all 24 triads.