| Shape you play | Chord you hear |
|---|---|
| C | B |
| D | Db |
| E | Eb |
| F | E |
| G | Gb |
| A | Ab |
| B | Bb |
| Am | Abm |
| Bm | Bbm |
| Dm | Dbm |
| Em | Ebm |
| F#m | Fm |
If you don't want to retune, play the song in standard with every chord moved down a half step (Gb instead of G, Eb instead of E). That usually means barre chords. The other way is a capo: tune down for the gig and capo 1 to get back to standard pitch when you need it. See the transpose chart and the capo chart.
Chartless listens to the song and tells you the key and the chords as they go by, so you can tell in a few seconds whether a record is in standard or tuned down. Its tuner has Eb standard built in, and the chart's chord shapes follow whatever tuning you pick.
More: free online tuner · all tunings · all guides · Drop D chords · DADGAD chords.