Chord to Key Finder
Enter the chords of a song and find which key they belong to. Works out the most likely key, the diatonic chords and what does not fit.
Separate chords with commas — e.g. C, G, Am, F or Dm7, G7, Cmaj7.
Read as: C, G, Aminor, F
Most likely key: A minor
4 of 4 chords fit in A minor — every chord is diatonic.
| Key | Chords that fit | Does not fit |
|---|---|---|
| A minor | 4 / 4 | — |
| C major | 4 / 4 | — |
| D minor | 3 / 4 | G |
| E minor | 3 / 4 | F |
| F major | 3 / 4 | G |
Roman numerals for A minor: i – ii° – III – iv – v – VI – VII.
How it works: A key is the set of seven notes in its scale. A chord belongs to a key when all its notes are in that scale; the best key is the one that fits the most of your chords.
Try next: Scale Finder · Guitar Scale Finder · Piano Scale Finder