A minor third in just intonation corresponds to a pitch ratio of 6:5 or 1:12. while in an equal tempered tuning, a minor third is equal to three semitones, a ratio of 1:2^{3/12} (approximately 1.189), or 300 cents, 15.641 centss smaller.

The minor third is considered the most consonant interval after the unison, octave, perfect fifth, perfect fourth, major third, and minor sixth.

See also: