Learning how to make guitar chords helps you move beyond memorizing chord shapes and understand why chords sound the way they do. A guitar chord is created by combining specific notes using a formula based on musical intervals.
Once you understand chord construction, you can create your own major, minor, seventh, and extended chords, find chord variations, and build better songs.
The basic process is:
Choose a root note → Add specific intervals → Create a chord → Find a playable guitar shape
What Makes a Guitar Chord?
A chord is a group of three or more notes played together. The notes combine to create harmony.
The simplest chords are called triads, which contain three important notes:
- Root note – The note that gives the chord its name
- Third – Determines whether the chord sounds major or minor
- Fifth – Adds stability and fullness
For example:
C major chord
Notes:
C – E – G
- C = root
- E = major third
- G = perfect fifth
Together, these notes create the sound of a C major chord.
You can learn more about the basics in this guide to what is a guitar chord.
Understanding Notes and Intervals
To create chords, guitarists need to understand intervals.
An interval is the distance between two musical notes.
For chord building, musicians usually measure intervals from the root note.
Common intervals:
| Interval | Meaning |
|---|---|
| Root | Starting note |
| Major third | Creates a major sound |
| Minor third | Creates a minor sound |
| Perfect fifth | Adds stability |
| Minor seventh | Adds color and tension |
The third is especially important because it changes the character of the chord.
Example:
C major:
C – E – G
C minor:
C – E♭ – G
The only difference is the third note, but the emotional quality changes completely.
How to Build a Major Guitar Chord
A major chord follows this formula:
Root + Major 3rd + Perfect 5th
The interval formula is:
1 – 3 – 5
Example: C major
Start with the C major scale:
C – D – E – F – G – A – B
Choose:
- 1st note: C
- 3rd note: E
- 5th note: G
Result:
C – E – G
This creates a C major chord.
More examples:
G Major
G major scale:
G – A – B – C – D – E – F#
Choose:
- G
- B
- D
Result:
G – B – D
A Major
A major scale:
A – B – C# – D – E – F# – G#
Choose:
- A
- C#
- E
Result:
A – C# – E
How to Build a Minor Guitar Chord
Minor chords use a different third.
Formula:
Root + Minor 3rd + Perfect 5th
Or:
1 – ♭3 – 5
Example: A minor
A major scale:
A – B – C# – D – E – F# – G#
Lower the third:
C# becomes C
Result:
A – C – E
This creates A minor.
Examples:
| Chord | Notes |
|---|---|
| A minor | A – C – E |
| E minor | E – G – B |
| D minor | D – F – A |
Minor chords often create a darker or more emotional sound compared with major chords.
How to Create Seventh and Extended Chords
Once you understand triads, you can add more notes to create richer chords.
Seventh Chords
A seventh chord adds the seventh note above the root.
Example:
C major:
C – E – G
Cmaj7:
C – E – G – B
Dominant seventh:
C7:
C – E – G – B♭
Seventh chords are common in:
- Blues
- Jazz
- Soul
- Pop music
Extended Chords
Extended chords add notes beyond the seventh.
Examples:
- C9
- C11
- C13
These chords create more color and complexity.
You can explore more about chord types in this guide to extended chords on guitar.
Turning Chord Formulas Into Guitar Shapes
Knowing the notes of a chord is only the first step. Guitarists must arrange those notes into playable shapes.
A guitar chord shape depends on:
- String placement
- Fret position
- Finger arrangement
- Note order
For example, a C major chord can be played in different ways:
- Open C shape
- Barre chord shape
- Smaller triad shape
The notes remain the same, but the arrangement changes.
These different arrangements are called voicings.
You can learn more about this concept with guitar chord shapes.
How Songwriters Create Their Own Chords
Many songwriters create chords by experimenting with combinations of notes and changing traditional chord formulas.
Common methods include:
Adding Notes
Start with a basic chord and add extra tones.
Example:
C major:
C – E – G
Add B:
Cmaj7:
C – E – G – B
Changing Chord Qualities
Change major chords into minor chords or add extensions.
Example:
C → Cm → Cm7
Each version creates a different emotional feeling.
Using Different Voicings
The same chord can sound completely different depending on where it is played on the guitar neck.
Combining Chords From a Key
Most songs use chords that naturally belong together in a musical key.
For example, chords from C major include:
- C major
- D minor
- E minor
- F major
- G major
- A minor
- B diminished
Understanding these relationships helps songwriters create progressions that sound connected.
Common Mistakes When Making Guitar Chords
Memorizing Shapes Without Understanding Notes
Learning shapes is useful, but knowing the notes inside the chord helps you create your own variations.
Ignoring the Third
The third determines whether a chord sounds major or minor. Changing this note changes the chord quality.
Adding Too Many Notes
More notes do not always make a chord better. Simple triads are often the foundation of great songs.
Creating Shapes That Are Difficult to Play
A theoretical chord may not always be practical on guitar. Good chord shapes balance musical possibilities with playability.
Frequently Asked Questions
How are guitar chords made?
Guitar chords are made by combining specific notes based on intervals. Most basic chords use a root note, third, and fifth.
What three notes make a chord?
The three basic notes of a triad are the root, third, and fifth.
Can beginners create their own guitar chords?
Yes. Beginners can create chords by learning basic formulas and experimenting with different note combinations.
How do you turn notes into a guitar chord shape?
After choosing chord notes, arrange them across the guitar strings in a playable position. The same chord can have multiple shapes and voicings.
Daniel Murphy is a guitar theory and chord analysis writer at GuitarChordIdentifier. He focuses on chord recognition, guitar harmony, music theory, and interactive learning tools for guitarists, musicians, songwriters, and beginners.