Nail- Penny Size

Length in Inches

Length in Millimeters

2d

1

25.40

3d

1 1/4

31.75

4d

1 1/2

38.10

5d

1 3/4

44.45

6d

2

50.80

7d

2 1/4

57.15

8d

2 1/2

63.50

9d

2 3/4

69.85

10d

3

76.20

12d

3 1/4

82.55

16d

3 1/2

88.90

20d

3 3/4

95.25

30d

4 1/2

114.30

40d

5

127.00

50d

5 1/2

139.70

60d

6

152.40

8

0.17188

4.3658

7.2187

44.242

10

0.14063

3.5720

5.9062

28.834

11

0.1250

3.1750

5.1500

25.6312

12

0.10938

2.7783

4.5937

22.427

14

0.07813

1.9845

3.2812

16.019

16

0.06250

1.5875

2.6250

12.815

18

0.05000

1.2700

2.1000

10.252

20

0.03750

0.9525

1.5750

7.689

22

0.03125

0.7938

1.3125

6.409

24

0.02500

0.6350

1.0500

5.126

26

0.01875

0.4763

0.7875

3.845

28

0.01563

0.3970

0.6562

3.1816

Plates

3/16"

0.1875

4.76

7.752

37.85

1/2"

0.25

6.35

10.336

50.46

5/16"

0.3125

7.94

12.920

63.08

3/8"

0.375

9.53

15.503

75.79

1/2"

0.50

12.70

20.671

100.92

5/8"

0.625

15.88

25.839

126.15

3/4"

0.75

19.05

31.007

151.38

1"

1.00

25.4

41.342

201.83