An 11th chord is a ninth chord with the eleventh added on top. The formula is: root + major third + perfect fifth + seventh + ninth + eleventh. That’s six distinct note names, creating one of the richest, most complex chords in music.
The eleventh is the same as the fourth, but one octave higher. If you have a C9 chord (C, E, G, Bb, D), adding the eleventh means adding an F — but the F sits two octaves above the root, creating the interval of 17 semitones. An 11th chord can have three variations: major 11th, dominant 11th, and minor 11th, depending on the chord quality and the seventh.
11th chords are primarily used in jazz and contemporary sophisticated music. Because they include so many notes, they require careful voicing on guitar — you often omit the third or fifth to keep the chord playable and focused on the most colorful tones. The eleventh creates a sophisticated, complex harmonic landscape.
How the 11th Chord Formula Works
An 11th chord builds on a ninth chord by adding one more note. Let’s build a Cmaj11 to understand the full structure.
Start with a Cmaj9 base: C (root), E (major third, 4 semitones), G (perfect fifth, 7 semitones), B (major seventh, 11 semitones), D (major ninth, 14 semitones). Now add the eleventh: F is 5 semitones above C, but we want it in the upper octave. Count 17 semitones: C to C# (1), C# to D (2), D to D# (3), D# to E (4), E to F (5), F to F# (6), F# to G (7), G to G# (8), G# to A (9), A to A# (10), A# to B (11), B to C (12), C to C# (13), C# to D (14), D to D# (15), D# to E (16), E to F (17). That F is your eleventh.
So Cmaj11 = C, E, G, B, D, F (all six notes if you play them all). That’s a complex harmonic structure. Notice that the eleventh (F) is quite close to the major third (E) — only 2 semitones separate them. This closeness can create tension, which is why many guitarists omit the third when voicing an 11th chord.
Understanding how extended chords are built shows that each extension (7th, 9th, 11th, 13th) follows the same pattern. Each interval is a third above the previous one (counting the staff), making extended chords predictable once you understand the logic.
The Three Types of 11th Chords
Major 11th (Cmaj11): Major chord + major seventh + ninth + eleventh. Formula: root + major third + perfect fifth + major seventh + major ninth + perfect eleventh. Cmaj11 = C, E, G, B, D, F. Creates an open, sophisticated, complex sound.
Dominant 11th (C11): Major chord + minor seventh + ninth + eleventh. Formula: root + major third + perfect fifth + minor seventh + major ninth + perfect eleventh. C11 = C, E, G, Bb, D, F. Creates a bluesy, jazzy, complex sound.
Minor 11th (Cm11): Minor chord + minor seventh + ninth + eleventh. Formula: root + minor third + perfect fifth + minor seventh + major ninth + perfect eleventh. Cm11 = C, Eb, G, Bb, D, F. Creates a dark, complex, jazzy sound.
The eleventh stays the same (perfect eleventh, 17 semitones) across all three. What changes is the chord quality (major vs. minor) and the seventh (major vs. minor). Each variation has a distinctive character.
Many guitarists voiced 11th chords omit the third to avoid the tension between the third and eleventh. A Cmaj11 voicing might skip the E, playing C, G, B, D, F instead. This gives the chord the harmonic identity of an 11th chord without the tension of the major third and perfect eleventh sitting too close together.
Building 11th Chords on Guitar
Playing 11th chords on guitar requires strategic voicing because the chords have so many notes. The most common approach is to omit one or more notes to keep the chord playable.
A typical Cmaj11 voicing might use C on the eighth fret of the low E string, G on the third fret of the A string, B on the fourth fret of the D string, D on the fifth fret of the G string, and F on the first fret of the high E string. That’s all the notes except the E (the third). You could include the E somewhere, but this voicing is cleaner and more focused.
For jazz comping, an 11th chord voicing might emphasize the extensions (the 9th and 11th) and the color notes (the 7th), omitting the root and fifth entirely since the bass player probably has those covered. This creates light, sophisticated voicings that sit well in an ensemble.
When building extended chords, the principle is to include enough notes to define the chord quality while keeping it playable. An 11th chord doesn’t require six distinct notes every time — it just requires that the eleventh is present to justify the chord name.
Common 11th Chord Examples
Here are 11th chords in different keys with their full note content:
Cmaj11: C, E, G, B, D, F (often voiced without the E)
C11: C, E, G, Bb, D, F (often voiced without the E or G)
Cm11: C, Eb, G, Bb, D, F
Gmaj11: G, B, D, F#, A, C (often voiced without the B)
G11: G, B, D, F, A, C (often voiced without the B or G)
Gm11: G, Bb, D, F, A, C
Dmaj11: D, F#, A, C#, E, G (often voiced without the F#)
D11: D, F#, A, C, E, G (often voiced without the F# or A)
Notice how these chords contain most of the notes of the scale. A Cmaj11 contains six of the seven notes in a C major scale (missing the raised seventh, which wouldn’t fit the formula anyway). This richness is why 11th chords sound so complete and sophisticated.
When to Use 11th Chords
11th chords appear primarily in jazz contexts where harmonic sophistication is valued. A jazz musician might comp with maj11, min11, and 11 voicings to create lush, complex chord progressions. The eleventh adds harmonic interest that keeps the music sounding fresh and modern.
In contemporary music and film scoring, 11th chords are used for sophisticated, complex emotional effects. They’re less common than 9th chords because they’re more complex and require more careful voicing.
Understanding guitar chord theory and jazz harmony shows how 11th chords sit within the larger harmonic landscape. They’re extensions of basic harmony, adding layers of sophistication and color to simple progressions.
An 11th chord can stand alone or move to other chords through voice leading. The multiple notes give composers many options for smooth transitions. Some notes stay in place while others move, creating seamless harmonic flow.
Frequently Asked Questions
Do I always have to play all six notes of an 11th chord?
No. Guitar voicings often omit one or more notes. As long as the eleventh is present (distinguishing it from a 9th chord), it’s still an 11th chord. Many practical voicings omit the third, fifth, or root.
Why do many 11th chord voicings omit the third?
The perfect eleventh (F) is only 2 semitones below the perfect octave plus a major third (E an octave higher). For Cmaj11, E and the next F are very close, creating tension. Omitting the E avoids this clash.
How is an 11th chord different from a sus4?
A sus4 chord replaces the third with a fourth (no third present). An 11th chord includes the third and adds the eleventh as an extension. Csus4 = C, F, G. Cmaj11 = C, E, G, B, D, F. Completely different chords.
What’s the eleventh interval in semitones?
The eleventh is 17 semitones from the root. On the same string, that’s 17 frets. On different strings, use your interval knowledge to locate it.
Are 11th chords used in rock or pop?
Rarely. 11th chords are primarily a jazz and contemporary classical tool. Rock and pop tend to use simpler chords (triads, sevenths, maybe 9ths) and simpler voicings.
Can an 11th chord resolve to another chord?
11th chords rarely need to resolve in a traditional sense. They’re often stable harmonic moments or parts of jazz progressions. Voice leading can connect them to other chords by keeping common tones and moving other notes smoothly.