Music Interval Calculator

How to Use This Calculator

1. Select the first note (the lower note).
2. Select the second note (the higher note).
3. The calculator displays the interval name, number of semitones, and quality.
4. Use this to learn intervals, understand harmony, or analyze music.

Interval Calculation

Intervals are calculated by counting semitones between notes:

Example: C to E is 4 semitones = Major 3rd. C to G is 7 semitones = Perfect 5th.

Full Description

Musical intervals are the foundation of harmony and melody. An interval is the distance between two notes, measured in semitones (half steps). Each interval has a name that describes both its size (2nd, 3rd, 4th, etc.) and quality (major, minor, perfect, augmented, diminished). Understanding intervals is essential for music theory, ear training, and composition.

Intervals are classified as consonant (harmonious) or dissonant (tense). Perfect intervals (unison, 4th, 5th, octave) and major/minor 3rds and 6ths are generally consonant. Minor 2nds, major 7ths, and the tritone are dissonant. This classification helps explain why certain chord progressions sound pleasing while others create tension.

This calculator helps you identify intervals between any two notes. Select the notes, and it shows the interval name, number of semitones, and quality. Use it to learn intervals, understand chord construction, practice ear training, or analyze the harmony in music. Intervals are fundamental to understanding music theory.

Frequently Asked Questions