Perfect Unison
0 Half Steps
Minor Second
1 Half Step
Major Second
2 Half Steps
Minor Third
3 Half Steps
Perfect Fourth
5 Half Steps
Diminished Fifth (Augmented Fourth)
6 Half Steps
Fifth
7 Half Steps
Major Third
4 Half Steps
Minor Sixth
8 Half Steps
Major Sixth
9 Half Steps
Minor Seventh
10 Half Steps
Major Seventh
11 Half Steps
Perfect Octave
12 Half Steps