Calibration Resources

Metric/Inch Conversion Chart

Millimeters	Fractions	Inches
.397	1/64	.015625
.794	1/32	.03125
1.191	3/64	.046875
1.588	1/16	.0625
1.984	5/64	.078125
2.381	3/32	.09375
2.778	7/64	.109375
3.175	1/8	.125
3.572	9/64	.140625
3.969	5/32	.15625
4.366	11/64	.171875
4.762	3/16	.1875
5.159	13/64	.203125
5.556	7/32	.21875
5.953	15/64	.234375
6.350	1/4	.25
6.747	17/64	.265625
7.144	9/32	.28125
7.541	19/64	.296875
7.938	5/16	.3125
8.334	21/64	.328125
8.731	11/32	.34375
9.128	23/64	.359375
9.525	3/8	.375
9.922	25/64	.390625
10.319	13/32	.40625
10.716	27/64	.421875
11.112	7/16	.4375
11.509	29/64	.453125
11.906	15/32	.46875
12.303	31/64	.484375
12.700	1/2	.5

Millimeters	Fractions	Inches
13.097	33/64	.515625
13.494	17/32	.53125
13.891	35/64	.546875
14.288	9/16	.5625
14.684	37/64	.573125
15.081	19/32	.59375
15.478	39/64	.609375
15.875	5/8	.625
16.272	41/64	.640625
16.669	21/32	.65625
17.066	43/64	.671875
17.462	11/16	.6875
17.859	45/64	.703125
18.256	23/32	.71875
18.653	47/64	.734375
19.050	3/4	.75
19.447	49/64	.765625
19.844	25/32	.78125
20.241	51/64	.796875
20.638	13/16	.8125
21.034	53/64	.828125
21.431	27/32	.84375
21.828	55/64	.859375
22.225	7/8	.875
22.622	57/64	.890625
23.019	29/32	.90625
23.416	59/64	.921875
23.812	15/16	.9375
24.209	61/64	.953125
24.606	31/32	.96875
25.003	63/64	.984375
25.400	1	1.000