Music Theory
Music theory calculators for intervals, chord building, scale generation, circle of fifths, tuning systems, and harmonic analysis.
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Musical Interval Calculator
Calculate the musical interval between two notes including semitones, interval name, and quality.
Chord Builder Calculator
Build chords from root note and chord type. See note composition and inversions.
Scale Generator Calculator
Generate scale notes for major, minor, pentatonic, blues, and modal scales from any root note.
Circle of Fifths Calculator
Explore key relationships using the circle of fifths. Find dominant, subdominant, relative, and parallel keys.
Tempo Calculator
Calculate BPM from a counted number of beats over a time period, with subdivision support.
Song Key Finder Calculator
Determine the likely key of a song by entering the notes present in the melody or chords.
Harmonic Analysis Calculator
Analyze a chord progression by determining scale degrees and identifying common patterns.
Tuning System Calculator
Compare note frequencies across equal temperament, just intonation, and Pythagorean tuning systems.
Modulation Path Calculator
Plan a smooth modulation between two keys. Find pivot chords, common tones, and smoothness score.
Rhythm Subdivision Calculator
Calculate exact note durations at any tempo, including dotted notes and tuplets.