INCH

DECIMAL

METRIC / MM

1/64

.0156

0.397

1/32

.0312 / .0394

0.794 / 1.000

3/64

.0469

1.191

1/16

.0625

1.588

5/64

.0781 / .0787

1.984 / 2.000

3/32

.0937

2.381

7/64

.1094 / .1181

2.778 / 3.000

1/8

.1250

3.175

9/64

.1406

3.572

5/32

.1562 / .1575

3.969 / 4.000

11/64

.1719

4.366

3/16

.1875 / .1969

4.763 / 5.000

13/64

.2031

5.159

7/32

.2187

5.556

15/64

.2344 / .2362

5.953 / 6.000

1/4

.2500

6.350

17/64

.2656 / .2756

6.747 / 7.000

9/32

.2813

7.144

19/64

.2969

7.541

5/16

.3125 / .3150

7.938 / 8.000

21/64

.3281

8.334

11/32

.3438 / .3543

8.731 / 9.000

23/64

.3594

9.128

3/8

.3750

9.525

25/64

.3906 / .3937

9.922 / 10.000

13/32

.4063

10.319

27/64

.4219 / .4331

10.716 / 11.000

7/16

.4375

11.113

29/64

.4531

11.509

15/32

.4688 / .4724

11.906 / 12.000

31/64

.4844

12.303

1/2

.5000 / .5118

12.700 / 13.000

33/64

.5156

13.097

17/32

.5313

13.494

35/64

.5469 / .5512

13.891 / 14.000

9/16

.5625

14.288

37/64

.5781 / .5906

14.684 / 15.000

19/32

.5938

15.081

39/64

.6094

15.478

5/8

.6250 / .6299

15.875 / 16.000

41/64

.6406

16.272

21/32

.6563 / .6693

16.669 / 17.000

43/64

.6719

17.066

11/16

.6875

17.463

45/64

.7031 / .7087

17.859 / 18.000

23/32

.7188

18.256

47/64

.7344 / .7480

18.653 / 19.000

3/4

.7500

19.050

49/64

.7656

19.447

25/32

.7813 / .7874

19.844 / 20.000

51/64

.7969

20.241

13/16

.8125 / .8268

20.638 / 21.000

53/64

.8281

21.034

27/32

.8438

21.431

55/64

.8594 / .8661

21.828 / 22.000

7/8

.8750

22.225

57/64

.8906 / .9055

22.622 / 23.000

29/32

.9063

23.019

59/64

.9219

23.416

15/16

.9375 / .9449

23.813 / 24.000

61/64

.9531

24.209

31/32

.9688 / .9843

24.606 / 25.000

63/64

.9844 / 1.0000

25.003 / 25.400

1"

1.0000

25.400