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Octave

Conversions to other units

1 octave | 12 semitones | 2.4 perfect fourths | 1.714 perfect fifths

Conversions from other units

1 semitone | 0.08333 octaves 1 perfect fourth | 0.4167 octaves 1 perfect fifth | 0.5833 octaves

Unit usage

music interval

Basic unit dimensions

[semitone]

Example music interval

octave built on C_4

C_4 | C_5

C_4 | 261.626 Hz (hertz) C_5 | 523.251 Hz (hertz) (with middle A tuned to 440 hertz)

60 | 72

Corresponding inverted interval

octave