Identify and calculate musical intervals between notes.
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Interval Result
Interval NamePerfect Fifth (P5)
Semitones7
The interval is measured ascending from C to G. If you inverted them (G to C), the interval would be Perfect Fourth (P4).
Overview
Intervals measure distance between two notes. Named by number (2nd, 3rd, 5th) and quality (major, minor, perfect). Essential for harmony, melody, and music theory.
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Pro Tips
Perfect intervals: 4th, 5th, octave.
Major/minor: 2nd, 3rd, 6th, 7th.
12 semitones = 1 octave.
Tritone = 6 semitones (augmented 4th).
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Fun Facts
"Perfect 5th = 7 semitones (most consonant after octave)."
"Major 3rd = 4 semitones; minor 3rd = 3 semitones."
"Tritone called 'diabolus in musica' (devil in music)."
