Table of Intervals

Remember, perfect intervals have only one basic form. The first (also called prime or unison), fourth, fifth and eighth (or octave) are all perfect intervals. Perfect intervals can be seen on both major and minor scales. On the other hand, non-perfect intervals have two basic forms. The second, third, sixth and seventh are non-perfect intervals; it can either be a major or minor interval. Major intervals comes from the major scale. Minor intervals are exactly a half-step lower than major intervals.

Here's a handy table that will make it easier for you to determine intervals by counting the distance of one note to another note in half-steps.