Quick answer: The chords in the key of C major are C, Dm, Em, F, G, Am, and B diminished — one chord built on each note of the C major scale. The most common C major chord progressions are I–V–VI–IV (C–G–Am–F), I–IV–V–IV (C–F–G–F), and II–V–I (Dm–G–C). Every example below is playable right now.
The 7 Chords in the Key of C Major
C major is the only major key with no sharps or flats — one chord built on each note of the scale: C, Dm, Em, F, G, Am, and B diminished.
Maj – min – min – Maj – Maj – min – dim — that’s the chord-quality formula behind every major key, not just C’s.
C is already selected below, with its seven chords highlighted. Click any other key on the circle — F major, right next door, is a good place to start — to see its own seven diatonic chords instantly, the same way.
The 7 Chords in C Major, as Seventh Chords
Stack one more note — the 7th — on top of each triad and you get the seventh-chord version of the same seven chords. This is the vocabulary jazz and more advanced arranging use instead of plain triads:
| Degree | Roman | Chord | Notes | Quality |
|---|---|---|---|---|
| 1 | I | Cmaj7 | C–E–G–B | Major 7th |
| 2 | II | Dm7 | D–F–A–C | Minor 7th |
| 3 | III | Em7 | E–G–B–D | Minor 7th |
| 4 | IV | Fmaj7 | F–A–C–E | Major 7th |
| 5 | V | G7 | G–B–D–F | Dominant 7th |
| 6 | VI | Am7 | A–C–E–G | Minor 7th |
| 7 | VII° | Bm7♭5 | B–D–F–A | Half-diminished |
Notice the one exception: the V chord is a dominant 7th (G7), not a major 7th. That’s deliberate — the dominant 7th is what creates the pull back to C. Every other chord in the set keeps its plain major-7th or minor-7th quality.
Advanced C Major Progressions (Seventh Chords)
Swap the triads in any progression above for their seventh-chord equivalents and the harmony gains real depth — this is jazz’s home turf.
II–V–I (2-5-1) — Dm7–G7–Cmaj7
The same II–V–I as before, now in full color: the minor 7th sets up, the dominant 7th builds tension, the major 7th resolves it. For the full breakdown of this and other jazz progressions, see Jazz Chord Progressions.
I–VI–II–V (1-6-2-5) — Cmaj7–Am7–Dm7–G7
The jazz turnaround — a four-chord loop that always points back to the top of the progression, one bar at a time.
Popular C Major Chord Progressions
Every progression below is labeled two ways — Roman numerals for music theory, and the plain-number shorthand (1-4-5, 1-5-6-4…) guitarists and producers actually search for.
I–IV–V–IV (1-4-5-4) — C–F–G–F
The foundation of blues, rock and roll, and folk. Every chord is major, so it never leaves home — it just visits. Landing back on F instead of stopping cold on G keeps the loop rolling instead of ending in mid-air.
I–V–VI–IV (1-5-6-4) — C–G–Am–F
The most-recorded chord progression in modern pop — sometimes called the “Axis” progression. Thousands of songs, four chords.
II–V–I (2-5-1) — Dm–G–C
The backbone of jazz harmony — a gentle setup (Dm) building into tension (G) and resolving home (C).
I–VI–IV–V (1-6-4-5) — C–Am–F–G
The doo-wop progression — practically every 1950s pop song leans on this exact order.
When C Isn’t the First Chord
Songs don’t always start on C, even when they’re in the key of C. This motion is the strongest signal that a progression is about to land on C major:
IV–V–I (4-5-1) — F–G–C
The classic cadence. F builds lift, G builds tension, C resolves it — the most reliable way to confirm you’re in C major by ear.
The II–V–I above (Dm–G–C) is the other common way songs arrive at C major — the Dm softens the approach before G pulls toward home.
The C Major Scale
The seven chords above all come from one scale. Understanding it explains why those specific chords exist.
What notes are in the C major scale?
C–D–E–F–G–A–B — the seven white keys on a piano, in order. No sharps, no flats. This is also called the C major natural scale, since nothing is altered.
What is the formula of the C major scale?
Every major scale follows the same interval pattern: Whole–Whole–Half–Whole–Whole–Whole–Half (W–W–H–W–W–W–H). Starting on C and applying that formula lands you back on the seven natural notes with no adjustment needed.
Why does C major have no sharps or flats?
Because C is the note where the W–W–H–W–W–W–H pattern falls exactly on the white keys. Start that same formula from any other note and at least one step needs a sharp or flat to keep the pattern intact. That’s why C major is usually the first key taught — there’s nothing to alter, just the pattern itself.
How can I practice the C major scale?
Open the Guitar Scale Chart — C major is preloaded. Hit Play to hear it ascending and descending, or look at the fretboard to see exactly where each note falls.
What does the C major scale sound like?
Bright and fully resolved — it’s the reference sound most ears use to judge “in tune” and “at rest,” which is exactly why it’s the scale played above in the practice tool.
C Major Chord Progressions Reference
| Progression | Numbers | Chords in C |
|---|---|---|
| I–IV–V–IV | 1-4-5-4 | C–F–G–F |
| I–V–VI–IV | 1-5-6-4 | C–G–Am–F |
| II–V–I | 2-5-1 | Dm–G–C |
| I–VI–IV–V | 1-6-4-5 | C–Am–F–G |
| IV–V–I | 4-5-1 | F–G–C |
| II–V–I (7ths) | 2-5-1 | Dm7–G7–Cmaj7 |
| I–VI–II–V (7ths) | 1-6-2-5 | Cmaj7–Am7–Dm7–G7 |
Explore key relationships with the Circle of Fifths tool, or read the theory behind every diatonic key in Music Theory Basics for Songwriters. For the full diatonic chord table across all 12 major keys, see The Circle of Fifths Explained.
Further reading: Diatonic function — Wikipedia · Major scale — Wikipedia