Chord Transposer

Paste your lyrics and chords into the input area. The tool automatically detects chord lines and leaves the lyrics untouched. Use the +1 and -1 buttons to transpose up or down by one semitone, or select a specific interval. The transposed result appears instantly with spacing and line breaks preserved, so chords stay lined up over the right words. Copy the output to use it wherever you need it.

Transposing chords lets you change the key of a song without rewriting everything manually. Common reasons include matching the song to your vocal range, using easier chord shapes, or playing along with a recording in a different key. The most common transpositions are up or down by 1-3 semitones.

Every accidental has two names — F# and Gb are the same pitch. By default the tool follows each source chord's spelling: flat chords stay flat, sharp chords stay sharp. If you'd rather see one consistent style, use the Accidentals toggle to force everything to sharps or everything to flats. Guitarists usually prefer sharps (F#, C#), while horn players and much piano sheet music lean toward flats (Gb, Db).

Slash chords like G/B (a G chord with B in the bass) transpose both parts — the chord and the bass note. Extended and altered chords are recognized too: m7, maj9, add11, 6/9, 7sus4, m7b5, dim, aug, and alterations like 7#9 all shift correctly with their suffixes intact. Inline bracket chords in the ChordPro style, like [Am]hello, are also detected inside lyric lines.

If a chord line contains something that looks like a chord but doesn't parse — a typo like Fxy, or a notation the tool doesn't know — that token is left exactly as it was and listed in a small warning under the output. This is deliberate: it's safer to leave one token untouched and tell you than to silently guess and corrupt your chord sheet. Fix the token in the input and it will transpose with the rest.