Chord Warrior
Two chords in, every way their voices can pair up out, cheapest first. The tones that hold, the ones that step, and the semitones each one travels, in pitch classes and on no instrument.
A free voice-leading calculator for players and writers: two chord symbols in, every one-to-one pairing of their voices out, ranked by the semitones the voices travel, with the common tones named and each step signed up or down — worked out in pitch classes, on no instrument and in no key, and checked by brute force before it ships.
How a Lead Is Measured
Read Both Chords
Each chord symbol is read as a set of pitch classes, the twelve note names with octave set aside. A symbol the reader does not recognise is reported as unread, never guessed.
Pair Every Voice
Every voice of the first chord is matched with exactly one voice of the second, and every possible matching is tried, so no two voices ever lead from the same note.
Count the Semitones
Each voice’s step is measured the shorter way round the octave and the steps are added up. The cheapest pairing comes first, ties side by side, with the common tones named.
C to Am, drawn: 2 semitones in all. See every pairing ranked.
What Lives Here
The Calculator
Pick two chords by root and type and every pairing of their voices comes back ranked, with the common tones held and each step in semitones.
The Chord Builder
Start from the major triad and pick any chord type on any root: see which voices step, which give way, and which notes are added.
How Chords Are Built
Three voices stacked in thirds, then sevenths, sixths, sus tones and extensions: every chord type measured in semitones above its root.
Chord Neighbours
Pick a chord type and see every chord one voice of it reaches, a semitone or a whole tone away, with what each one spells.
Named Transforms
Every transform a cited source names, from P, L and R to the seventh-chord steps, measured voice by voice on C.
About
What the calculator measures, what it leaves to its sisters, and how every count is checked before it ships.
FAQ
What counts as a step, why there is no key and no instrument, and how a tie between two leads is shown.
Theme Builder
Four colours in, a contrast-checked palette out, for every table of voices and steps.
The Site That Measures the Space Between Chords
The rest of the Warrior Network publishes chords: drawn on instruments, taught on the theory site, strung into progressions in their own styles. This site does the one thing none of them does — it takes two chords and measures how far each voice has to travel from one to the other. It names no chord’s sound and plays nothing; it measures, and shows its working.
Go Deeper
Start with about the site · the FAQ · tools · the network.