Diminished Triad Scale — All 12 Keys
Diminished Triad in all 12 keys for guitar, bass, ukulele, and piano — notes, scale degrees, and free printable charts. Root, minor 3rd, and diminished 5th — an unstable, tense sound used to lead strongly into the chord that follows it.
How the diminished triad is built
The diminished triad has 3 notes, with the scale degrees R · b3 · b5. Those degrees stay the same in every key — only the note names change — which is why the same shape moves up and down the neck.
Pick a key
Charts below are grouped by instrument. Each one lists the notes and degrees, and opens in the interactive tool where you can compare it against another scale, switch tuning, and export a printable PDF.