Mandolin Scale Harmonizer

Triads & 7th chord diagrams for every scale — mandolin GDAE tuning

Harmonize Scale
Harmony
Originalii–V–ISec. Dom.
Display
FingerNoteDegree
Fretboard
ScaleArpeggio

C major scale diatonic chords

IC major
2frGDAE12
2frGDAE1235frGDAE12342frGDAE12x
IID minor
GDAE21
GDAEx1GDAE2x12frGDAE123x
IIIE minor
2frGDAE12
2frGDAE1232frGDAE41232frGDAEx1
IVF major
3frGDAE3124
GDAE2x315frGDAE13422frGDAE123x
VG major
2frGDAE12
5frGDAE31242frGDAE1x2frGDAEx12
VIA minor
2frGDAE123
2frGDAE12342frGDAE31245frGDAE1342
VIIB dim
GDAEx21
3frGDAE213x7frGDAE14327frGDAE1324

C major scale seventh chords

IC maj7
2frGDAE4123
5frGDAE1234
IID m7
GDAE231
3frGDAE21347frGDAE123410frGDAE1243
IIIE m7
2frGDAE1
2frGDAE31425frGDAE21349frGDAE1234
IVF maj7
2frGDAE123
7frGDAE412310frGDAE1234
VG 7
GDAE321
2frGDAE2132frGDAE4213GDAEx21
VIA m7
2frGDAE1234
5frGDAE12437frGDAE314210frGDAE2134
VIIB m7♭5
GDAE231
7frGDAE12439frGDAE2143

C major — Mandolin scale

Mandolin fretboard diagram

Standard (GDAE)
20
C major scale — 4-string guitar fretboard diagramInteractive fretboard diagram showing the C major scale on 4-string guitar with 20 frets. Notes: E, F, G, A, B, C, D.EFGABCDEFGABCABCDEFGABCDEFDEFGABCDEFGAGABCDEFGABCD13579111213151719

How does the Mandolin Scale Harmonizer work?

The mandolin uses double courses tuned in fifths: G-D-A-E (GDAE), identical to the violin. Each course has two strings tuned in unison that ring together.

Select a root note and a scale to see all diatonic chords — triads and seventh chords — with chord diagrams for every position on the mandolin fretboard.

Use the interactive fretboard diagram to explore the full scale. Adjust tuning and fret range with the controls below.