Major Triads Explained: Formula, Notes, and Examples

Major triads are one of the most important building blocks in music theory. They are the foundation of many major chords and appear in countless songs, chord progressions, and melodies.

A major triad is a three-note chord made from:

Root + Major Third + Perfect Fifth

For example:

C Major Triad

• Root: C
• Major third: E
• Perfect fifth: G

So:

C – E – G

creates a C major triad.

Once you understand the formula, you can build a major triad from any note without memorizing every chord separately.

What Is a Major Triad?

A triad is a chord made of three different notes stacked in thirds.

The word “triad” means “a group of three,” so a basic triad contains three notes:

1. Root – The note that names the chord
2. Third – The note that determines whether the chord sounds major or minor
3. Fifth – The note that adds stability

A major triad has a bright, stable, and complete sound because of the relationship between these intervals.

For example:

G Major Triad

• Root: G
• Major third: B
• Perfect fifth: D

Result:

G – B – D

A major triad is the basic structure of a major chord. Larger chords, such as major seventh chords, are often created by adding extra notes above this foundation.

You can learn more about how chords are created in this guide on how chords are built.

How Major Triads Are Built

A major triad is created by stacking two thirds:

• A major third
• A minor third

The formula is:

Root → Major Third → Perfect Fifth

Or:

1 – 3 – 5

In terms of semitones:

• Root to major third = 4 semitones
• Major third to perfect fifth = 3 semitones

Total:

4 + 3 semitones

Example: C Major Triad

Start with C.

Move four semitones upward:

C → C# → D → D# → E

This gives the major third:

E

Then move three more semitones:

E → F → F# → G

This gives the perfect fifth:

G

The final triad:

C – E – G

Major Triad Formula Explained

The universal formula for every major triad is:

1 – 3 – 5

This means:

• Use the first note of the scale as the root.
• Use the third note of the scale as the third.
• Use the fifth note of the scale as the fifth.

For example, the G Major scale:

G – A – B – C – D – E – F#

Take:

• 1st note: G
• 3rd note: B
• 5th note: D

Result:

G – B – D

= G Major triad

This formula works for all major keys.

You can explore the general major chord structure in this guide on major chord formula.

Major Triad Examples in Different Keys

Here are some common major triads:

Major Triad	Notes
C Major	C – E – G
G Major	G – B – D
F Major	F – A – C
D Major	D – F# – A
A Major	A – C# – E
E Major	E – G# – B
B Major	B – D# – F#

Although the notes change, the structure remains the same:

Root + Major Third + Perfect Fifth

Major Triads vs Minor Triads

The main difference between major and minor triads is the third note.

The fifth remains the same, but the third changes.

Triad Type	Formula	Example
Major Triad	Root + Major 3rd + Perfect 5th	C – E – G
Minor Triad	Root + Minor 3rd + Perfect 5th	C – Eb – G

Compare:

C Major

C – E – G

The distance from C to E is four semitones.

C Minor

C – Eb – G

The distance from C to Eb is three semitones.

That one semitone difference changes the emotional quality of the chord.

Major triads usually sound:

• Bright
• Strong
• Stable

Minor triads often sound:

• Darker
• More emotional
• More reflective

You can learn more about this difference in major vs minor chords.

Major Triads and Major Chords: Are They the Same?

A major triad is the simplest form of a major chord.

A basic major chord contains:

Root + Major Third + Perfect Fifth

which is exactly the structure of a major triad.

However, some major chords can include additional notes.

Examples:

C Major Triad

C – E – G

C Major Seventh Chord

C – E – G – B

The first three notes form the major triad, while the extra note creates a more advanced chord.

Major Triads in Music

Major triads are essential because they create strong harmonic foundations.

They are used in:

• Songwriting
• Pop music
• Classical harmony
• Film music
• Jazz arrangements

Common progressions using major triads include:

I – IV – V Progression

Example in C Major:

C – F – G

All three chords are major triads.

This progression creates a strong feeling of movement and resolution.

I – V – vi – IV Progression

Example:

C – G – Am – F

This progression combines major and minor triads to create emotional contrast.

Major Triads in Chord Building

Understanding major triads makes it easier to learn:

• Seventh chords
• Extended chords
• Chord inversions
• Harmonic progressions

Many advanced chords begin with a simple triad structure.

You can explore more triad types in this guide on types of triads.

Common Beginner Mistakes

Confusing Triads With All Chords

A triad is a type of chord, but not every chord is a triad.

A triad contains three notes.

A seventh chord contains four notes.

An extended chord may contain even more notes.

Memorizing Shapes Without Understanding

Learning chord shapes can be useful, but understanding the formula allows you to create any major triad.

Instead of memorizing:

C = C E G

learn:

Major triad = 1–3–5

Ignoring the Third Note

The third is the most important note for identifying chord quality.

Changing only the third can turn:

C Major:

C – E – G

into:

C Minor:

C – Eb – G

Frequently Asked Questions

What is a major triad?
A major triad is a three-note chord made from a root, major third, and perfect fifth.

How do you build a major triad?
Build a major triad by starting with a root note, adding a note four semitones above it for the major third, and then adding a note three semitones above the third for the perfect fifth.

What notes are in a major triad?
A major triad contains three notes: the root, major third, and perfect fifth. For example, C Major contains C, E, and G.

What is the difference between major and minor triads?
The difference is the third interval. Major triads use a major third, while minor triads use a minor third.

Are all major chords major triads?
Basic major chords are major triads, but some major chords include additional notes such as sevenths or extensions.