D♯m7♭5 (half-diminished) / E♭m7♭5 (half-diminished)

4-note half-diminished 7th on D♯ / E♭D♯, F♯, A, C♯.

Press to hear the chord strummed low to high.

Also written ø7. A diminished triad with a flat (not double-flat) seventh — the "half" tells you the seventh isn't lowered all the way. The ii of a minor key.

The notes

Pitches taken from the first fingering below — click any note to open its frequency page.

Interval formula

DegreeNoteWhat it is
1D♯root
♭3F♯minor third
♭5Aflat fifth (diminished)
♭7C♯flat seventh (dominant)

The formula reads in semitones above the root (D♯): 1, ♭3, ♭5, ♭7. A voicing may leave a tone out — often the fifth — but never adds one from outside this set.

Guitar fingerings · 4

1222
open position
6fr1324
from fret 6
7fr1214
from fret 7
10fr2341
from fret 10

Ukulele fingerings · 4

23
open position
5fr2314
from fret 5
8fr1234
from fret 8
11fr1312
from fret 11

Read a diagram top-down: the thick bar is the nut, dots are where to press (the number is which finger), means play the open string, means don't play it. A bar across strings is a barre.

Other D♯ / E♭ chords

m7♭5 (half-diminished) chords on every root