F# Diminished Scale (Half-Whole)

Notes in the F# Diminished Scale (Half-Whole)

Degree Name Note Frequency (A=440)
1 Tonic F# 369.994 Hz
♭2 Altered 2nd G 391.995 Hz
♭3 Minor Mediant A 440.000 Hz
3 Major Mediant A# 466.164 Hz
♯4 Tritone C 261.626 Hz
5 Dominant C# 277.183 Hz
6 Major Submediant D# 311.127 Hz
♭7 Subtonic E 329.628 Hz

Interval Pattern

Formula: H-W-H-W-H-W-H-W
Step Interval Semitones From Note To Note
1 Half Step (H) 1 F# G
2 Whole Step (W) 2 G A
3 Half Step (H) 1 A A#
4 Whole Step (W) 2 A# C
5 Half Step (H) 1 C C#
6 Whole Step (W) 2 C# D#
7 Half Step (H) 1 D# E
8 Whole Step (W) 2 E F#

Chords Built on Scale Degrees

Degree Note Chord Quality
1 F# F# diminished diminished
♭2 G G diminished diminished
♭3 A A diminished diminished
3 A# A# diminished diminished
♯4 C C diminished diminished
5 C# C# diminished diminished
6 D# D# diminished diminished
♭7 E E diminished diminished

Key Signature

6 — The F# key signature uses F#, C#, G#, D#, A#, E#.

F# Diminished Scale (Half-Whole) in Practice

The F# Diminished Scale (Half-Whole) uses the key signature of 6 sharps (F#, C#, G#, D#, A#, E#). F# major has six sharps and is enharmonically equivalent to Gb major. It is used when a sharp key is preferred over the flat alternative in notation. On guitar, F# positions offer open-string resonance for fingering positions for this scale.

The half-whole diminished scale alternates half and whole steps, creating an 8-note symmetrical scale ideal for dominant chord improvisation and tension-building in jazz.

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Note Equal Temp. Pythagorean Just Intonation
F# 369.994 Hz 371.251 Hz 367.911 Hz
G 391.995 Hz 391.111 Hz 392.438 Hz
A 440.000 Hz 440.000 Hz 436.043 Hz
A# 466.164 Hz 463.538 Hz 470.926 Hz
C 261.626 Hz 260.740 Hz 261.626 Hz
C# 277.183 Hz 278.437 Hz 279.067 Hz
D# 311.127 Hz 309.026 Hz 313.951 Hz
E 329.628 Hz 330.001 Hz 327.032 Hz

Related Scales

Guitar: F# Diminished Scale (Half-Whole) Positions

The F# key offers 6 sharps (F#, C#, G#, D#, A#, E#) on guitar. Sharp-side keys like F# are idiomatic guitar keys because open strings (E, A, D, G, B, E) align with the scale's natural resonance points.