Chord Progression Transposer

Paste a chord progression, pick the new key — get the transposed chords instantly. Chord qualities (m, maj7, sus4, etc) are preserved.

Chord progression

Separate chords with spaces. Use newlines for measures/sections. Supports any quality (m, maj7, m7, 7, sus4, sus2, dim, aug).

From key

To key

Transposed (C → G, +7 semitones)

G  D  Em  C
G  D  C  G

How transposing works

Transposing changes every chord up or down by the same interval — the song's melody and chord relationships stay the same, but the actual pitches shift. Common uses:

Match a vocalist's range (lower a song that sits too high)
Move to an easier key on piano (C major vs F♯ major)
Pair with other instruments in different keys
Practice modulation by playing a song in all 12 keys