Find the original key in the left column, then find each chord in that row. The column header is its number. Chords that aren't in the row are usually borrowed; a ♭7 (F in the key of G) is the common one, and it's in the table too.
Go to the new key's row and read across with the same numbers. Keep any extras the same: a G/B in G is 1/3, which is A/C# in A; a Csus2 becomes Dsus2.
| Key | 1 | 2m | 3m | 4 | 5 | 6m | ♭7 |
|---|---|---|---|---|---|---|---|
| C | C | Dm | Em | F | G | Am | Bb |
| Db | Db | Ebm | Fm | Gb | Ab | Bbm | B |
| D | D | Em | F#m | G | A | Bm | C |
| Eb | Eb | Fm | Gm | Ab | Bb | Cm | Db |
| E | E | F#m | G#m | A | B | C#m | D |
| F | F | Gm | Am | Bb | C | Dm | Eb |
| F# | F# | G#m | A#m | B | C# | D#m | E |
| G | G | Am | Bm | C | D | Em | F |
| Ab | Ab | Bbm | Cm | Db | Eb | Fm | Gb |
| A | A | Bm | C#m | D | E | F#m | G |
| Bb | Bb | Cm | Dm | Eb | F | Gm | Ab |
| B | B | C#m | D#m | E | F# | G#m | A |
Chartless charts whatever is playing and shows the chords and Nashville numbers live. Pro adds transpose (and the capo advisor), so the chart on screen can be in the key your band is actually playing.
See also: the chords in every key.
Got a whole chart to move? Paste it into the chord transposer and pick the new key.