My Chord Finder

dominant 7th chords

These dominant 7th chords cover 12 roots. The finder has an open-position shape for 10 of them and a movable shape for 10. A measured G7 tritone is 5.6 cents against equal temperament.

Twelve roots

Open position here means at least one open string and no fingered fret above 3. A movable shape has no open string. Each one is the first shape the guitar finder returns under that rule.

C7

C7, frets x 3 2 3 1 0 from the sixth string to the first; suggested fingers x, 3, 2, 4, 1, o1fr×E3A2D4G1B○E
C7, frets x 3 2 3 1 0

C7 open

C7 frets from the sixth string to the first: x 3 2 3 1 0.

C7 spelling: C, E, G, Bb.

C7 sounding notes: C3 (1), E3 (3), Bb3 (b7), C4 (1), E4 (3).

C7 open strings: first string, E4.

C7 leaves out G.

C7, frets x 3 2 3 1 x from the sixth string to the first; suggested fingers x, 3, 2, 4, 1, x1fr×E3A2D4G1B×E
C7, frets x 3 2 3 1 x

C7 movable

C7 frets from the sixth string to the first: x 3 2 3 1 x.

C7 spelling: C, E, G, Bb.

C7 sounding notes: C3 (1), E3 (3), Bb3 (b7), C4 (1).

C7 open strings: none.

C7 leaves out G.

C#7

C#7 has no open-position shape in the finder.

C#7, frets x 4 3 4 2 x from the sixth string to the first; suggested fingers x, 3, 2, 4, 1, x1fr×E3A2D4G1B×E
C#7, frets x 4 3 4 2 x

C#7 movable

C#7 frets from the sixth string to the first: x 4 3 4 2 x.

C#7 spelling: C#, E#, G#, B.

C#7 sounding notes: C#3 (1), E#3 (3), B3 (b7), C#4 (1).

C#7 open strings: none.

C#7 leaves out G#.

D7

D7, frets x x 0 2 1 2 from the sixth string to the first; suggested fingers x, x, o, 2, 1, 31fr×E×A○D2G1B3E
D7, frets x x 0 2 1 2

D7 open

D7 frets from the sixth string to the first: x x 0 2 1 2.

D7 spelling: D, F#, A, C.

D7 sounding notes: D3 (1), A3 (5), C4 (b7), F#4 (3).

D7 open strings: fourth string, D3.

D7, frets x 5 4 5 3 x from the sixth string to the first; suggested fingers x, 3, 2, 4, 1, x3fr×E3A2D4G1B×E
D7, frets x 5 4 5 3 x

D7 movable

D7 frets from the sixth string to the first: x 5 4 5 3 x.

D7 spelling: D, F#, A, C.

D7 sounding notes: D3 (1), F#3 (3), C4 (b7), D4 (1).

D7 open strings: none.

D7 leaves out A.

D#7

D#7, frets x x 1 0 2 3 from the sixth string to the first; suggested fingers x, x, 1, o, 2, 31fr×E×A1D○G2B3E
D#7, frets x x 1 0 2 3

D#7 open

D#7 frets from the sixth string to the first: x x 1 0 2 3.

D#7 spelling: D#, F##, A#, C#.

D#7 sounding notes: D#3 (1), F##3 (3), C#4 (b7), F##4 (3).

D#7 open strings: third string, G3.

D#7 leaves out A#.

D#7, frets x 6 5 6 4 x from the sixth string to the first; suggested fingers x, 3, 2, 4, 1, x4fr×E3A2D4G1B×E
D#7, frets x 6 5 6 4 x

D#7 movable

D#7 frets from the sixth string to the first: x 6 5 6 4 x.

D#7 spelling: D#, F##, A#, C#.

D#7 sounding notes: D#3 (1), F##3 (3), C#4 (b7), D#4 (1).

D#7 open strings: none.

D#7 leaves out A#.

E7

E7, frets 0 2 0 1 0 0 from the sixth string to the first; suggested fingers o, 2, o, 1, o, o1fr○E2A○D1G○B○E
E7, frets 0 2 0 1 0 0

E7 open

E7 frets from the sixth string to the first: 0 2 0 1 0 0.

E7 spelling: E, G#, B, D.

E7 sounding notes: E2 (1), B2 (5), D3 (b7), G#3 (3), B3 (5), E4 (1).

E7 open strings: sixth string, E2, fourth string, D3, second string, B3, first string, E4.

E7 has no movable shape with every string fretted or muted.

F7

F7, frets 1 0 1 2 1 1 from the sixth string to the first; suggested fingers 2, o, 1, 3, 1, 11fr2E○A1D3G1B1E
F7, frets 1 0 1 2 1 1

F7 open

F7 frets from the sixth string to the first: 1 0 1 2 1 1.

F7 spelling: F, A, C, Eb.

F7 sounding notes: F2 (1), A2 (3), Eb3 (b7), A3 (3), C4 (5), F4 (1).

F7 open strings: fifth string, A2.

F7, frets 1 3 1 2 1 1 from the sixth string to the first; suggested fingers 1, 3, 1, 2, 1, 11fr1E3A1D2G1B1E
F7, frets 1 3 1 2 1 1

F7 movable

F7 frets from the sixth string to the first: 1 3 1 2 1 1.

F7 spelling: F, A, C, Eb.

F7 sounding notes: F2 (1), C3 (5), Eb3 (b7), A3 (3), C4 (5), F4 (1).

F7 open strings: none.

F#7

F#7, frets 0 1 2 3 2 2 from the sixth string to the first; suggested fingers o, 1, 2, 3, 2, 21fr○E1A2D3G2B2E
F#7, frets 0 1 2 3 2 2

F#7 open

F#7 frets from the sixth string to the first: 0 1 2 3 2 2.

F#7 spelling: F#, A#, C#, E.

F#7 sounding notes: E2 (b7), A#2 (3), E3 (b7), A#3 (3), C#4 (5), F#4 (1).

F#7 open strings: sixth string, E2.

F#7, frets 2 4 2 3 2 2 from the sixth string to the first; suggested fingers 1, 3, 1, 2, 1, 11fr1E3A1D2G1B1E
F#7, frets 2 4 2 3 2 2

F#7 movable

F#7 frets from the sixth string to the first: 2 4 2 3 2 2.

F#7 spelling: F#, A#, C#, E.

F#7 sounding notes: F#2 (1), C#3 (5), E3 (b7), A#3 (3), C#4 (5), F#4 (1).

F#7 open strings: none.

G7

G7, frets 3 2 0 0 0 1 from the sixth string to the first; suggested fingers 3, 2, o, o, o, 11fr3E2A○D○G○B1E
G7, frets 3 2 0 0 0 1

G7 open

G7 frets from the sixth string to the first: 3 2 0 0 0 1.

G7 spelling: G, B, D, F.

G7 sounding notes: G2 (1), B2 (3), D3 (5), G3 (1), B3 (3), F4 (b7).

G7 open strings: fourth string, D3, third string, G3, second string, B3.

G7, frets 3 5 3 4 3 3 from the sixth string to the first; suggested fingers 1, 3, 1, 2, 1, 13fr1E3A1D2G1B1E
G7, frets 3 5 3 4 3 3

G7 movable

G7 frets from the sixth string to the first: 3 5 3 4 3 3.

G7 spelling: G, B, D, F.

G7 sounding notes: G2 (1), D3 (5), F3 (b7), B3 (3), D4 (5), G4 (1).

G7 open strings: none.

G#7

G#7 has no open-position shape in the finder.

G#7, frets 4 6 4 5 4 4 from the sixth string to the first; suggested fingers 1, 3, 1, 2, 1, 14fr1E3A1D2G1B1E
G#7, frets 4 6 4 5 4 4

G#7 movable

G#7 frets from the sixth string to the first: 4 6 4 5 4 4.

G#7 spelling: G#, B#, D#, F#.

G#7 sounding notes: G#2 (1), D#3 (5), F#3 (b7), B#3 (3), D#4 (5), G#4 (1).

G#7 open strings: none.

A7

A7, frets x 0 2 0 2 0 from the sixth string to the first; suggested fingers x, o, 1, o, 2, o1fr×E○A1D○G2B○E
A7, frets x 0 2 0 2 0

A7 open

A7 frets from the sixth string to the first: x 0 2 0 2 0.

A7 spelling: A, C#, E, G.

A7 sounding notes: A2 (1), E3 (5), G3 (b7), C#4 (3), E4 (5).

A7 open strings: fifth string, A2, third string, G3, first string, E4.

A7 has no movable shape with every string fretted or muted.

A#7

A#7, frets x 1 0 1 3 1 from the sixth string to the first; suggested fingers x, 1, o, 2, 4, 31fr×E1A○D2G4B3E
A#7, frets x 1 0 1 3 1

A#7 open

A#7 frets from the sixth string to the first: x 1 0 1 3 1.

A#7 spelling: A#, C##, E#, G#.

A#7 sounding notes: A#2 (1), C##3 (3), G#3 (b7), C##4 (3), E#4 (5).

A#7 open strings: fourth string, D3.

A#7, frets x 1 3 1 3 1 from the sixth string to the first; suggested fingers x, 1, 3, 1, 4, 11fr×E1A3D1G4B1E
A#7, frets x 1 3 1 3 1

A#7 movable

A#7 frets from the sixth string to the first: x 1 3 1 3 1.

A#7 spelling: A#, C##, E#, G#.

A#7 sounding notes: A#2 (1), E#3 (5), G#3 (b7), C##4 (3), E#4 (5).

A#7 open strings: none.

B7

B7, frets x 2 1 2 0 2 from the sixth string to the first; suggested fingers x, 2, 1, 3, o, 41fr×E2A1D3G○B4E
B7, frets x 2 1 2 0 2

B7 open

B7 frets from the sixth string to the first: x 2 1 2 0 2.

B7 spelling: B, D#, F#, A.

B7 sounding notes: B2 (1), D#3 (3), A3 (b7), B3 (1), F#4 (5).

B7 open strings: second string, B3.

B7, frets x 2 4 2 4 2 from the sixth string to the first; suggested fingers x, 1, 3, 1, 4, 11fr×E1A3D1G4B1E
B7, frets x 2 4 2 4 2

B7 movable

B7 frets from the sixth string to the first: x 2 4 2 4 2.

B7 spelling: B, D#, F#, A.

B7 sounding notes: B2 (1), F#3 (5), A3 (b7), D#4 (3), F#4 (5).

B7 open strings: none.

× mute · ○ open · green root · terracotta other chord tones
Numbers show a suggested finger: 1 index · 2 middle · 3 ring · 4 pinky. A bar means one finger holds several strings. Frets run from the sixth string, low E, to the first string, high E.

Why a dominant 7th resolves

G7 spells G, B, D, F. The third is B and the flat seventh is F, 6 semitones apart, a tritone. C major spells C, E, G. B rises 1 semitone to C, and F falls 1 semitone to E. That is why this V7 resolves to I.

One sentence on the major 7th

Gmaj7 spells G, B, D, F#. Its seventh is F#, 1 semitone above the F in G7. 7th chords guitar is the five-kind overview, and seventh chords compares all five kinds with the seventh chords of a major key.

A measured G7

The tritone from the third up to the flat seventh: B3 is 248.23 Hz and F5 is 704.39 Hz. F5 brought down 1 octave is 352.19 Hz. 352.19 ÷ 248.23 = 1.41883. Equal temperament for 6 semitones is 2^(6 ÷ 12) = 1.41421, so this interval is 5.6 cents against equal temperament. B3 (MIDI 59) is 440 × 2^((59 − 69) ÷ 12) = 246.94 Hz, 9.0 cents.

The bar is measure 3 of Prelude No. 1 in C major, BWV 846, played by Kimiko Ishizaka and released under CC0 1.0. Johann Sebastian Bach died in 1750, and Book I of the Well-Tempered Clavier is dated 1722. The 1893 G. Schirmer edition of Book I prints B in the bass with B, D, G, F above it, the chord G, B, D, F. The strongest pitch classes in that bar were F, G, D, B. Hear on this page uses the site's sampled guitar, not that recording.

Questions people ask about dominant 7th chords

What is a dominant 7th chord?

A dominant 7th chord is 1, 3, 5, b7. G7 spells G, B, D, F. Major 7 raises the seventh: Gmaj7 spells G, B, D, F#. Its seventh is F#, 1 semitone above the F in G7.

Why does a dominant 7th want to resolve?

G7 spells G, B, D, F. The third is B and the flat seventh is F, 6 semitones apart, a tritone. C major spells C, E, G. B rises 1 semitone to C, and F falls 1 semitone to E. That is why this V7 resolves to I.

Is this the same page as 7th chords guitar?

No. 7th chords guitar is the overview of five kinds of seventh chord. This page stays with the dominant 7th: twelve roots, an open shape where the finder has one, and a movable shape.

What is the cents number?

The tritone from the third up to the flat seventh: B3 is 248.23 Hz and F5 is 704.39 Hz. F5 brought down 1 octave is 352.19 Hz. 352.19 ÷ 248.23 = 1.41883. Equal temperament for 6 semitones is 2^(6 ÷ 12) = 1.41421, so this interval is 5.6 cents against equal temperament. B3 (MIDI 59) is 440 × 2^((59 − 69) ÷ 12) = 246.94 Hz, 9.0 cents.