Diminished sixth
| Inverse | augmented third |
|---|---|
| Name | |
| Other names | - |
| Abbreviation | d6 |
| Size | |
| Semitones | 7 |
| Interval class | 5 |
| Just interval | 192:125, 32:21,49:32 |
| Cents | |
| 12-Tone equal temperament | 700 |
| 24-Tone equal temperament | 700 |
| Just intonation | 743 |
In classical music from Western culture, a diminished sixth (ⓘ) is an interval produced by narrowing a minor sixth by a chromatic semitone. For example, the interval from A to F is a minor sixth, eight semitones wide, and both the intervals from A♯ to F, and from A to F♭ are diminished sixths, spanning seven semitones. Being diminished, it is considered a dissonant interval, despite being equivalent to an interval known for its consonance.
Its inversion is the augmented third, and its enharmonic equivalent is the perfect fifth.