Mandolin Scale Harmonizer

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

C
major

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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.