To invert an interval, place the lower note one octave higher or the highest note an octave lower:


In the following tables you can see how an interval is transformed when inverted:

Interval: after inversion becomes:
2nd 7th
3rd 6th
4th 5th
5th 4th
6th 3rd
7th 2nd
Interval quality: after inversion becomes:
major minor
minor major
augmented diminished
diminished augmented
perfect perfect

The inversion of intervals is very useful in analyzing sixths and sevenths. See Identifying Intervals by Using Inversions.

Examples of interval inversions:

See Intervals in the Tutorials section.


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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
José Rodríguez Alvira.