FRACTION,
DECIMAL AND METRIC EQUIVALENTS

Fractional Inch

Dec.
Equiv.

Millimeters

Fractional Inch

Dec.
Equiv.

Millimeters

1/64

.0156

.397

17/32

.5313

13.494

1/32

.0313

.794

35/64

.5469

13.891

3/64

.0469

1.191

9/16

.5625

14.288

1/16

.0625

1.588

37/64

.5781

14.684

5/64

.0781

1.984

7/12

.5833

14.817

1/12

.0833

2.117

19/32

.5938

15.081

3/32

.0938

2.381

3/5

.6000

15.240

1/10

.1000

2.540

39/64

.6094

15.478

7/64

.1094

2.778

5/8

.6250

15.875

1/8

.1250

3.175

41/64

.6406

16.272

9/64

.1406

3.572

21/32

.6563

16.669

1/6

.1667

4.233

2/3

.6667

16.933

11/64

.1719

4.366

43/64

.6719

17.066

3/16

.1875

4.700

11/16

.6875

17.463

1/5

.2000

5.080

7/10

.7000

17.780

13/64

.2031

5.159

45/64

.7031

17.859

7/32

.2188

5.556

23/32

.7188

18.256

15/64

.2344

5.953

47/64

.7344

18.653

1/4

.2500

6.350

3/4

.7500

19.050

17/64

.2656

6.747

49/64

.7656

19.447

9/32

.2813

7.144

25/32

.7813

19.844

19/64

.2969

7.541

51/64

.7969

20.241

3/10

.3000

7.620

4/5

.8000

20.320

5/16

.3125

7.937

13/16

.8125

20.638

1/3

.3333

8.467

53/64

.8281

21.034

11/32

.3438

8.731

5/6

.8333

21.167

23/64

.3594

9.128

27/32

.8438

21.431

3/8

.3750

9.525

55/64

.8594

21.828

25/64

.3906

9.922

7/8

.8750

22.225

2/5

.4000

10.160

57/64

.8906

22.622

13/32

.4063

10.319

9/10

.9000

22.860

5/12

.4167

10.583

29/32

.9063

23.019

27/64

.4219

10.716

11/12

.9167

23.283

7/16

.4375

11.112

59/64

.9219

23.416

29/64

.4531

11.509

15/16

.9375

23.813

15/32

.4688

11.906

61/64

.9531

24.209

31/64

.4844

12.303

31/32

.9688

24.606

1/2

.5000

12.700

63/64

.9844

25.003

33/64

.5156

13.097

1”

1.0000

25.400