Pick a root note and a scale to see every note it contains and the diatonic chords built from it — across major, minor, the seven modes, pentatonic and blues.
Scale & Chord Finder
Diatonic chords in this key
| Degree | Chord | Quality |
|---|
Notes use sharp spelling for simplicity. Diatonic triads are built by stacking thirds within the scale; pentatonic and blues scales don’t have a standard 7-chord set, so the chord table is hidden for them.
How it works
A scale is a set of intervals (in semitones) from a root note; the tool maps those intervals onto note names. For seven-note scales it also stacks thirds on each degree to build the diatonic triads, labelling each with its Roman numeral and quality (major, minor, diminished or augmented).
FAQ
What are diatonic chords?
The chords built using only the notes of a scale. In a major key they follow the pattern I, ii, iii, IV, V, vi, vii° — the backbone of most chord progressions.
Why no chords for pentatonic scales?
Pentatonic and blues scales have five or six notes, so they don’t produce the standard seven diatonic triads — the tool shows their notes only.