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Imperial To Metric Converter (1/64" - 1")

Here's a handy metric converter that converts sizes from 1/64" (0.40mm) up to 1" (25.4mm). Decimal inches are also shown.

Fraction

Decimal

MM

Fraction

Decimal

MM

1/64

0.015625

0.40

33/64

0.515625

13.1

1/32

0.03125

0.80

17/32

0.53125

13.5

3/64

0.46875

1.2

35/64

0.546875

13.9

1/16

0.0625

1.6

9/16

0.5625

14.3

5/64

0.078125

2.0

37/64

0.578125

14.7

3/32

0.09375

2.4

19/32

0.59375

15.1

7/64

0.109375

2.8

39/64

0.609375

15.5

1/8

0.125

3.2

5/8

0.625

15.9

9/64

0.140625

3.6

41/64

0.64025

16.3

5/32

0.15625

4.0

21/32

0.65625

16.7

11/64

0.171875

4.4

43/64

0.71875

17.1

3/16

0.1875

4.8

11/16

0.6875

17.5

13/64

0.203125

5.2

54/64

0.703125

17.9

7/32

0.21875

5.6

23/32

0.71875

18.3

15/64

0.234375

6.0

47/64

0.734375

18.7

1/4

0.25

6.4

3/4

0.75

19.1

17/64

0.265625

6.8

49/64

0.765625

19.5

9/32

0.28125

7.2

25/32

0.78125

19.9

19/64

0.296875

7.

51/64

0.796875

20.2

5/16

0.3125

8.0

13/16

0.8125

20.6

21/64

0.328125

8.4

53/64

0.828125

21.0

11/32

0.34375

8.8

27/32

0.84375

21.4

23/64

0.359375

9.2

55/64

0.859375

21.8

3/8

0.375

9.6

7/8

0.875

22.2

25/64

0.390625

10.0

57/64

0.890625

22.6

13/32

0.40625

10.4

29/32

0.90625

23.0

27/64

0.421875

10.8

59/64

0.921875

23.4

7/16

0.4375

11.2

15/16

0.9375

23.8

39/64

0.453125

11.6

61/64

0.953125

24.2

15/32

0.46875

12.0

31/32

0.96875

24.6

31/64

0.484375

12.4

63/64

0.984375

25.0

1/2

0.5

12.8

1

1.0

25.4

Another handy tip from Coates Mitre 10 Home & Trade Lithgow