Chord Transposer
Shift any chord progression to any key — in real time. Supports all 37 chord types including 7ths, maj7, m7, dim, aug, and sus chords.
Transpose your progression
Open Chord Player, add your chords, and use the transposition slider to shift the entire song up or down in real time — while the audio keeps playing.
Open Chord Transposer →How chord transposition works
Transposing a chord progression means shifting every chord by the same number of semitones (half steps). The relationship between chords stays identical — only the key changes.
For example, the I–V–vi–IV progression in C major (C – G – Am – F) transposed up 7 semitones becomes the same progression in G major (G – D – Em – C). The emotional feel is the same, just in a different pitch range.
Semitone reference table
| From C | Semitones | Destination key |
|---|---|---|
| +1 | 1 semitone | C# / Db |
| +2 | 2 semitones | D |
| +3 | 3 semitones | D# / Eb |
| +4 | 4 semitones | E |
| +5 | 5 semitones | F |
| +6 | 6 semitones | F# / Gb |
| +7 | 7 semitones | G |
| +8 | 8 semitones | G# / Ab |
| +9 | 9 semitones | A |
| +10 | 10 semitones | A# / Bb |
| +11 | 11 semitones | B |
| +12 | 12 semitones | C (octave higher) |
Hear the same progression in different keys
I–V–vi–IV transposed from C to G. Same structure, different key. Notice how the feel changes slightly at a higher pitch.
Frequently asked questions
How do I transpose chord progressions?
To transpose a chord progression, shift every chord in the progression by the same number of semitones. For example, moving C–G–Am–F up by 2 semitones gives D–A–Bm–G. In Chord Sequence, use the transposition slider in the editor to shift the entire song in real time.
How many semitones are between common keys?
From C to D is 2 semitones. C to E is 4 semitones. C to F is 5. C to G is 7. C to A is 9. C to B is 11. Going up an octave is 12 semitones.
Why would I need to transpose a chord progression?
Transposing is useful when a song is too high or too low for your voice, when collaborating with a musician who plays in a different key, or when you want a fresh emotional feel from the same chord progression.