Decimal Chart

FRACTION	DECIMAL IN.	MM		FRACTION	DECIMAL IN.	MM
1/64	.01563	.40		33/64	.51563	13.1
1/32	.03125	.80		17/32	.53125	13.5
3/64	.04687	1.2		35/64	.54688	13.9
1/16	.0625	1.6		9/16	.56250	14.3
5/64	.07813	2.0		37/64	.57813	14.7
3/32	.09375	2.4		19/32	.59375	15.1
7/64	.10937	2.8		39/64	.60938	15.5
1/8	.125	3.2		5/8	.625	15.9
9/64	.14063	3.6		41/64	.64063	16.3
5/32	.15625	4.0		21/32	.65625	16.7
11/64	.17188	4.4		43/64	.67188	17.1
3/16	.1875	4.8		11/16	.6875	17.5
13/64	.20313	5.2		45/64	.70313	17.9
7/32	.21875	5.6		23/32	.71875	18.3
15/64	.23438	6.0		47/64	.73438	18.7
1/4	.25	6.4		3/4	.75	19.1
17/64	.26563	6.7		49/64	.76563	19.4
9/32	.28125	7.1		25/32	.78125	19.8
19/64	.29688	7.5		51/64	.79688	20.2
5/16	.3125	7.9		13/16	.8125	20.6
21/64	.32813	8.3		53/64	.82813	21.0
11/32	.34375	8.7		27/32	.84375	21.4
23/64	.35938	9.1		55/64	.85938	21.8
3/8	.375	9.5		7/8	.875	22.2
25/64	.39063	9.9		57/64	.89063	22.6
13/32	.40625	10.3		29/32	.90625	23.0
27/64	.42188	10.7		59/64	.92188	23.4
7/16	.4375	11.1		15/16	.9375	23.8
29/64	.45313	11.5		61/64	.95313	24.2
15/32	.46875	11.9		31/32	.96875	24.6
31/64	.48438	12.3		63/64	.98138	25.0
1/2	.50	12.7		1	1.0000	25.4

Note: 1 inch = 25.4 mm To convert decimals to milimeters multiply by 25.4 Example: 1/4" = 0.250" .250" nx 25.4 = 6.35 mm To convert milimeters to decimals, divide by 25.4 Example: 6.35 mm / 25.4 = .250" = 1/4"