Transposer

Paste a chord sheet, pick the target key — the chords move, spelled the way that key is actually written.

Original key Target key

The lyrics stay untouched; only the chords change.

Anotona does this for you

Photograph a page of sheet music or play the melody — Anotona finds the key, engraves the notes and transposes them into any other. Free.

Every note on this page is computed, not typed in — following the rule that also makes F# major spell its seventh degree E#, not F.