Reference Chart: Chord Formulas, Symbols & Intervals

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Here's a chart of chord interval formulas, symbols and notes.

You'll find the formulas, symbols and intervals for major, minor, diminished, augmented, dominant as well as suspended & add chords.

You can select a different root note from the selector in the bottom left corner and then see the notes and symbols for the chords built on that root note.

For more resources on chords, check out the Piano Chords tool, the Chords in Keys tool and the chord reference page.

→ You may also like this chart of scale formulas and intervals.

root note:

Major Chord Formulas

Major Chord Formula

1 3 5

Intervals

Root Major 3rd Perfect 5th

Notes

C E G

Symbols

C Cmaj CM C△

Major 6th Chord

1 3 5 6

Intervals

Root Major 3rd Perfect 5th Major 6th

Notes

Symbols

Major 7th Chord

1 3 5 7

Intervals

Root Major 3rd Perfect 5th Major 7th

Notes

Symbols

Cmaj7 C△7

Major 9th Chord

1 3 5 7 9

Intervals

Root Major 3rd Perfect 5th Major 7th Major 9th

Notes

Symbols

Major 13th Chord

1 3 5 7 9 13

Intervals

Root Major 3rd Perfect 5th Major 7th Major 9th Major 13th

Notes

Symbols

* the 11th is usually omitted in a major 13th chord

Minor Chord Formulas

Minor Chord Formula

1 b3 5

Intervals

Root Minor 3rd Perfect 5th

Notes

Symbols

Minor 6th Chord Formula

1 b3 5 6

Intervals

Root Minor 3rd Perfect 5th Major 6th

Notes

Symbols

Minor 7th Chord Formula

1 b3 5 b7

Intervals

Root Minor 3rd Perfect 5th Minor 7th

Notes

Symbols

Minor 9th Chord Formula

1 b3 5 b7 9

Intervals

Root Minor 3rd Perfect 5th Minor 7th Major 9th

Notes

Symbols

Minor 11th Chord Formula

1 b3 5 b7 9 11

Intervals

Root Minor 3rd Perfect 5th Minor 7th Major 9th Perfect 11th

Notes

Symbols

Minor 13th Chord Formula

1 b3 5 b7 9 13

Intervals

Root Minor 3rd Perfect 5th Minor 7th Major 9th Major 13th

Notes

Symbols

* the 11th is usually omitted in a minor 13th chord

Diminished Chord Formulas

Diminished Chord Formula

1 b3 b5

Intervals

Root Minor 3rd Diminished 5th

Notes

Symbols

Diminished 7th Chord Formula

1 b3 b5 bb7

Intervals

Root Minor 3rd Diminished 5th Diminished 7th

Notes

Symbols

Half-diminished Chord (aka half-diminished 7th)

1 b3 b5 b7

Intervals

Root Minor 3rd Diminished 5th Minor 7th

Notes

Symbols

Augmented Chord Formulas

Augmented Chord Formula

1 3 ♯5

Intervals

Root Major 3rd Augmented 5th

Notes

Symbols

Augmented 7th Chord Formula

1 3 ♯5 b7

Intervals

Root Major 3rd Augmented 5th Minor 7th

Notes

Symbols

Dominant Chord Formulas

Dominant 7th Chord Formula

1 3 5 b7

Intervals

Root Major 3rd Perfect 5th Minor 7th

Notes

Symbols

Dominant 9th Chord Formula

1 3 5 b7 9

Intervals

Root Major 3rd Perfect 5th Minor 7th Major 9th

Notes

Symbols

Dominant 11th Chord Formula

1 5 b7 9 11

Intervals

Root Perfect 5th Minor 7th Major 9th Major 11th

Notes

Symbols

* the 3rd is usually omitted in a dominant 11th chord

Suspended & Add Chord Formulas

Sus 2 Chord Formula

1 2 5

Intervals

Root Major 2nd Perfect 5th

Notes

Symbols

Sus 4 Chord Formula

1 4 5

Intervals

Root Perfect 4th Perfect 5th

Notes

Symbols

Add 9 Chord Formula

1 3 5 9

Intervals

Root Major 3rd Perfect 5th Major 9th