Just Intonation Tuning Guide
Reference
Chord Builder
Key
Choose key...
C
C# / Db
D
D# / Eb
E
F
F# / Gb
G
G# / Ab
A
A# / Bb
B
Chord Type
Choose chord...
Major Triad
Dominant 7th
Dominant 9th
Dominant 13th
Major add9
Minor Triad
Minor add9
Major 6th
Augmented Chord
Major 7th
Minor 6th (or rootless 9th)
Minor minor 7th
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Chord Identified:
Select intervals to identify chord
Root (1:1)
0
Major 2nd (9:8)
+4
SHARP
Minor 3rd (6:5)
+16
SHARP
Major 3rd (5:4)
-14
FLAT
Perfect 4th (4:3)
-2
FLAT
Perfect 5th (3:2)
+2
SHARP
Minor 6th (8:5)
-4
FLAT
Major 6th (5:3)
-16
FLAT
Major 6th (27:16)
+19
SHARP
♭7 Barbershop (7:4)
-31
FLAT
Major 7th (15:8)
-12
FLAT