Inches
Equivalents

European

U.S.

3 mm

¹/8 in

6 mm

¼ in

1.5 cm

½ in

2 cm

¾ in

2.5 cm

1 in

4 cm

1 ½ in

5 cm

2 in

6.5cm

2 ½ in

8 cm

3 in

9 cm

3 ½ in

10 cm

4 in

11.5 cm

4 ½ in

13 cm

5 in

14 cm

5 ½ in

15 cm

6 in

16.5 cm

6 ½ in

18 cm

7 in

19 cm

7 ½ in

20 cm

8 in

21.5 cm

8 ½ in

23 cm

9 in

24 cm

9 ½ in

25 cm

10 in

28 cm

11 in

30 cm

12 in

33 cm

13 in

35 cm

14 in

38 cm

15 in

41 cm

16 in

43 cm

17 in

46 cm

18 in

48 cm

19 in

51 cm

20 in

53 cm

21 in

56 cm

22 in

58 cm

23 in

61 cm

24 in

63.5 cm

25 in

76 cm

30 in

Conversions are approximate. To convert inches to centimeters,
multiply number of inches by 2.54
