Inch to Decimal to Millimeter Conversion Chart

Inch                       Decimal                 Millimeter

1/64                       0.0156                   0.3969

1/32                       0.0313                   0.7938

3/64                       0.0469                   1.1906

1/16                       0.0625                   1.5875

5/64                       0.0781                   1.9844

3/32                       0.0938                   2.3813

7/64                       0.1094                   2.7781

1/8                         0.1250                   3.1750

9/64                       0.1406                   3.5719

5/32                       0.1563                   3.9688

11/64                     0.1719                   4.3656

3/16                       0.1875                   4.7625

13/64                     0.2031                   5.1594

7/32                       0.2188                   5.5563

15/64                     0.2344                   5.9531

1/4                         0.2500                   6.3500

17/64                     0.2656                   6.7469

9/32                       0.2813                   7.1438

19/64                     0.2969                   7.5406

5/16                       0.3125                   7.9375

21/64                     0.3281                   8.3344

11/32                     0.3438                   8.7313

23/64                     0.3594                   9.1281

3/8                         0.3750                   9.5250

25/64                     0.3906                   9.9219

13/32                     0.4063                   10.3188

27/64                     0.4219                   10.7156

7/16                       0.4375                   11.1125

29/64                     0.4531                   11.5094

15/32                     0.4688                   11.9063

31/64                     0.4844                   12.3031

1/2                         0.5000                   12.7000

33/64                     0.5156                   13.0969

17/32                     0.5313                   13.4938

35/64                     0.5469                   13.8906

9/16                       0.5625                   14.2875

37/64                     0.5781                   14.6844

19/32                     0.5938                   15.0813

39/64                     0.6094                   15.4781

5/8                         0.6250                   15.8750

41/64                     0.6406                   16.2719

21/32                     0.6563                   16.6688

43/64                     0.6719                   17.0656

11/16                     0.6875                   17.4625

45/64                     0.7031                   17.8594

23/32                     0.7188                   18.2563

47/64                     0.7344                   18.6531

3/4                         0.7500                   19.0500

49/64                     0.7656                   19.4469

25/32                     0.7813                   19.8438

51/64                     0.7969                   20.2406

13/16                     0.8125                   20.6375

53/64                     0.8281                   21.0344

27/32                     0.8438                   21.4313

55/64                     0.8594                   21.8281

7/8                         0.8750                   22.2250

57/64                     0.8906                   22.6219

29/32                     0.9063                   23.0188

59/64                     0.9219                   23.4156

15/16                     0.9375                   23.8125

61/64                     0.9531                   24.2094

31/32                     0.9688                   24.6063

63/64                     0.9844                   25.0031

1                            1.0000                   25.4000

1-1/4                      1.2500                   31.7500

1-1/2                      1.5000                   38.1000

1-3/4                      1.7500                   44.4500

2                            2.0000                   50.8000

2-1/4                      2.2500                   57.1500

2-1/2                      2.5000                   63.5000

2-3/4                      2.7500                   69.8500

3                            3.0000                   76.2000

3-1/2                      3.5000                   88.9000

4                            4.0000                   101.6000

4-1/2                      4.5000                   114.3000

5                            5.0000                   127.0000

6                            6.0000                   152.4000

8                            8.0000                   203.2000

10                         10.0                        254.0

20                          20.0                       508.0

30                          30.0                       762.0

40                          40.0                       1016.0

60                          60.0                       1524.0

80                          80.0                       2032.0

100                        100.0                     2540.0