Perfect Fifth
An interval of seven semitones
Category
intervals
Pronunciation
PER-fikt FIFTH
Origin
Latin
Length
78 words · 1 min read
About Perfect Fifth
The perfect fifth spans seven semitones and has a frequency ratio of 3:2. After the octave, it is the most consonant interval and forms the backbone of Western harmony.
More intervals terms
Minor Seventh
View all intervalsterms →An interval spanning ten semitones, central to dominant seventh chords and the blues sound.
OctaveThe interval spanning eight diatonic scale degrees
Compound IntervalAn interval wider than an octave, such as a ninth, tenth, or eleventh.
Major SixthAn interval spanning nine semitones, often described as warm, open, and gently uplifting.
Major SecondAn interval spanning two semitones, equivalent to a whole tone or whole step.
Synonyms
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v1 · 09/04/2026Browse all terms →