Conversion

Standard (in) Metric (mm)
Fractional Decimal Decimal (Actual) Decimal (Common)
1/32 0.03125 0.79375 0.80
1/16 0.0625 1.5875 1.50
3/32 0.09375 2.38125 2.50
1/8 0.125 3.175 3.00
5/32 0.15625 3.96875 4.00
3/16 0.1875 4.7625 4.75
7/32 0.21875 5.55625 5.50
1/4 0.25 6.35 6.00
9/32 0.28125 7.14375 7.00
5/16 0.3125 7.9375 8.00
11/32 0.34375 8.73125 8.75
3/8 0.375 9.525 9.50
13/32 0.40625 10.31875 10.50
7/16 0.4375 11.1125 11.00
15/32 0.46875 11.90625 12.00
1/2 0.5 12.7 12.00
17/32 0.53125 13.49375 13.50
9/16 0.5625 14.2875 14.25
19/32 0.59375 15.08125 15.00
5/8 0.625 15.875 16.00
21/32 0.65625 16.66875 16.50
11/16 0.6875 17.4625 17.50
23/32 0.71875 18.25625 18.00
3/4 0.75 19.05 19.00
25/32 0.78125 19.84375 19.75
13/16 0.8125 20.6375 20.00
27/32 0.84375 21.43125 21.50
7/8 0.875 22.225 22.00
29/32 0.90625 23.01875 23.00
15/16 0.9375 23.8125 24.00
31/32 0.96875 24.60625 24.50
1/1 1 25.4 25.50