Chord Transposer – Transpose Chords to Any Key

How should I enter a chord progression?

Write roots as uppercase letters A through G, adding # or b where needed. C Am F G is a simple start. Suffixes such as m, M7, sus4 and 7 follow the root and are preserved. Use B for the note one semitone below C. The tool processes chord symbols; full lyric sheets are not reliably supported.

How do semitone and key-to-key transposition work?

One semitone is one step through the chromatic note sequence. At +2, C becomes D, Am becomes Bm, F becomes G and G becomes A. A negative semitone value moves the sequence down. Alternatively, enter C as the starting key and D as the destination. Choose the method that matches your source material, then check the entire output, including any bass notes written after a slash.

What happens to minor chords, extensions and slash chords?

Only recognised note letters move; the suffix keeps its written form. D#m7 becomes Fm7 at +2, while D#M7 becomes FM7. The lowercase m is not changed into an uppercase M. A note after a slash also moves: C/E becomes D/F# at +2. The tool preserves your notation rather than deciding whether a different chord quality or extension would better suit the new musical context.

How do the capo and prefer-flats settings work?

The capo number is subtracted from the transposition to give the shapes to play. For a sounding shift of +2 with capo 2, C Am F G remain the displayed shapes. Select prefer flats when Eb reads better than D#. This changes equivalent note spellings; it does not automatically determine the harmonic function or ideal notation.

How can I check the output before a rehearsal?

Start with a root movement you know, then include a minor chord, an extended chord and a slash bass. At zero semitones without a capo, D#m7 and D#M7 should stay visibly distinct. Play through the sequence and check whether it suits the singer. The tool moves symbols; it does not transpose recordings or create fingering diagrams.

Does a minor chord stay minor after transposition?

Yes. The m suffix is preserved: Am shifted up two semitones becomes Bm. The root changes while its written chord quality remains.

Why is the difference between m and M important?

They are meaningful notation. Lowercase m commonly indicates minor; M in M7 means something different. The tool preserves and visibly displays your suffix.

Does the bass note in G/B move too?

Yes. Both recognised notes move. At +2, G/B becomes A/C#. Any suffixes following the respective notes are retained.

Can I use it to raise the pitch of a recording?

No. It works with written chord symbols, not recorded audio. Use an appropriate audio-editing function to change a recording's pitch or speed.