Music Interval Calculator

Your details

Pitch-based ignores spelling and gives the enharmonic name (e.g. Tritone). Note-based uses the letter names you chose and gives the diatonic quality (e.g. Augmented 4th vs Diminished 5th).
The lower (or first) note of the interval.
Octave for Note 1. Middle C is C4.
The upper (or second) note of the interval.
Octave for Note 2.
Interval name
Perfect Fifth

Full name including quality and interval number

Semitones7
Cents700cents
Frequency ratio (ET)1.4983 : 1
Just-intonation ratio3:2
DirectionAscending
7 semitones
Half-step<2Step2-5Third5-8Up to octave8-12Compound12+

C4 to G4 is a ascending Perfect Fifth.

  • This is a perfectly consonant interval - the most stable sound in tonal music, used for resolution and finality.
  • The perfect fifth is the second harmonic overtone and the most consonant non-unison interval, fundamental to power chords.

Next stepTry switching to note-based mode to see how enharmonic spellings (like F# vs Gb) create different theoretical interval names even at the same pitch.

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