The following is a list of intervals of meantone temperament. These intervals constitute the standard vocabulary of intervals for the Western common practice era. Here 12-EDO refers to the size of the interval in 12 equal divisions of the octave temperament, which is the most common meantone temperament of the modern era, 19-EDO to 19 equal temperament, and 31-EDO to 31 equal temperament.

The column of ratios gives a ratio or ratios approximated by the interval in septimal meantone temperament. An augmented interval is increased by a chromatic semitone, and a diminished interval decreased.

12-EDO		19-EDO		31-EDO		Note spelling (from C)	Roman No.	Name	Just intonation ratios
Steps	Cents	Steps	Cents	Steps	Cents
0	0.00	0	0.00	0	0.00	C	I	Unison	1:1, 81:80, 126:125
				1	38.71	D	II	Diminished second or Diesis	128:125, 36:35
1	100.0	1	63.16	2	77.42	C♯	♯I	Augmented unison or Chromatic semitone	21:20, 25:24
		2	126.32	3	116.13	D♭	♭II	Minor second or Diatonic semitone	15:14, 16:15
2	200.0	3	189.47	5	193.55	D	II	Major second or tone	9:8, 10:9
		4	252.63	6	232.26	E	III	Diminished third	8:7
3	300.0			7	270.97	D♯	♯II	Augmented second	7:6
		5	315.79	8	309.68	E♭	♭III	Minor third	6:5
4	400.0	6	378.95	10	387.10	E	III	Major third	5:4
		7	442.11	11	425.81	F♭	♭IV	Diminished fourth	9:7
5	500.0			12	464.52	E♯	♯III	Augmented third	21:16
		8	505.26	13	503.23	F	IV	Perfect fourth	4:3
6	600.0	9	568.42	15	580.65	F♯	♯IV	Augmented fourth or Tritone	7:5
		10	631.58	16	619.35	G♭	♭V	Diminished fifth	10:7
7	700.0	11	694.74	18	696.77	G	V	Perfect fifth	3:2
		12	757.89	19	735.48	A	VI	Diminished sixth or Wolf fifth	32:21
8	800.0			20	774.19	G♯	♯V	Augmented fifth	14:9
		13	821.05	21	812.90	A♭	♭VI	Minor sixth	8:5
9	900.0	14	884.21	23	890.32	A	VI	Major sixth	5:3
		15	947.37	24	929.03	B	VII	Diminished seventh	12:7
10	1000.0			25	967.74	A♯	♯VI	Augmented sixth	7:4
		16	1010.53	26	1006.45	B♭	♭VII	Minor seventh	9:5, 16:9
11	1100.0	17	1073.68	28	1083.87	B	VII	Major seventh	15:8, 28:15
		18	1136.84	29	1122.58	C♭	♭VIII	Diminished octave	48:25
12	1200.00	19	1200.00	30	1161.29	B♯	♯VII	Augmented seventh	125:64
				31	1200.00	C	VIII	Octave or diapason	2:1

See also

• List of musical intervals