Chord Transposer
← All toolsType a progression, choose how far to move it, and get the chords back spelled for the key you land in. Quality suffixes are never touched — m7♭5 and add9 come out exactly as they went in — and the enharmonic convention is stated rather than guessed at: by default every root is spelled as the nearest spelling to the target key on the circle of fifths, so three semitones up from C gives E♭, not D♯.
Chord Transposer
Silent tool
Enharmonic convention: Auto spells each root as the nearest spelling to the target key on the circle of fifths.
How to use the Chord Transposer
- Type or paste your chords into the top box, separated by spaces or line breaks.
- Choose how far to move them. Each step in the dropdown is labelled with its interval name, so “+7” also reads “perfect 5th up”.
- Leave spelling on Auto to have the result spelled for the target key, or force sharps or flats if your chart needs them.
- Read the chips, or copy the plain-text result — it keeps your original spacing and line breaks.
FAQ
- How does it choose between F# and Gb?
- Auto spells every root as the nearest spelling to the target key on the circle of fifths. Transposing C Am F G7 up three semitones lands in E♭, a key with three flats, so the result is E♭ Cm A♭ B♭7 rather than the D♯ Cm G♯ A♯7 that a sharps-only tool would hand you. Where two spellings sit equally far from the key — F♯ and G♭ are both six accidentals — it takes the sharp. The Sharps and Flats options override the whole thing.
- What happens to chord qualities and slash chords?
- Nothing at all happens to the quality: everything after the root letter and its accidental is copied through untouched, so 7, maj7, m7b5, sus4, add9 and 13#11 all survive intact. A slash bass is parsed as its own note and transposed with the chord, so Am7/G up two semitones is Bm7/A.
- Can I paste a lyric sheet?
- Not usefully. Anything starting with a letter from A to G is treated as a chord symbol, so a word like “And” would be transposed along with the chords. Give it chords — anything it does not read as one is passed through untouched and listed underneath the result.
- Does transposing change how the progression sounds?
- In equal temperament the intervals inside every chord are preserved exactly, which is the whole point of twelve equal semitones, so the harmony is identical. What changes is the register, which open strings and easy keyboard shapes are available, and how the voicings sit under the hand.
