Free tool
What key is this song in?
Type the chords and get the key instantly — with Nashville numbers, so you can play it in any key the leader calls.
Most likely key
G major
Fit: 84%
Your chords as Nashville numbers
1
G
5
D
6m
Em
4
C
Chords in G major
1
G
2
Am
3
Bm
4
C
5
D
6
Em
7
F♯°
Also possible
- C major · 5 2 3m 167%
How it works
- Chords that fit
- Each chord that belongs to a key (right root and major/minor quality) adds to that key's score.
- Where it lands
- Songs usually start and end on the 1 chord, so the first and last chords count extra.
- The 4 and the 5
- Having the 4 and 5 chords of a key makes that key more likely.
- Borrowed chords
- Chords from outside the key (like a ♭7) are shown with ♭/♯ numbers instead of breaking the result.
Keep going
Learn the number system, then transpose any chart in one click.