Music theory basics · updated 2026-08-16

SEMITONE AND WHOLE TONE

The semitone is the smallest step in Western equal temperament; two semitones make a whole tone. Everything from scales to chord spelling is counted in them.

Close-up of handwritten sheet music and a pencil on a piano music desk

SOURCES AND CITATIONS

Free, primary references for semitone and whole tone — standards bodies, manufacturers, government offices and university course material.

RELATED TERMS IN MUSIC THEORY BASICS

Back to the full music glossary or read our latest articles.