(804)929-1012
(804)929-1012

Bead Size Conversion Chart

Have or need a bead and can't figure out a bead size? Use our handy bead conversion chart.

Metric to US Scale: 25.4mm = 1 inch.
Convert mm to inches, divide by 25.4 or multiply by 0.0394



Mm (Fractional Inch)

1mm (1/32")

1.5mm (1/16")

2mm (3/32")

2.5mm (7/64”)

3mm (1/8")

3.5mm (9/64”)

4mm (5/32")

4.5mm (11/64”)

5mm (3/16")

6mm (1/4")

7mm (9/32")

8mm (5/16")

9mm (11/32”)

10mm (3/8”)

11mm (7/16")

12mm (15/32")

13mm (1/2”)

14mm (9/16”)

15mm (19/32”)

16mm (5/8")

17mm (21/32")

18mm (23/32”)                  Dime: 17.91mm wide, 1.35mm deep

19mm (3/4")                      Penny: 19.05mm wide, 1.52mm deep

20mm (25/32”)

21mm (27/32”)                  Nickel: 21.21mm wide, 1.95mm deep

22mm (7/8")      

23mm (29/32”)

24mm (15/16”)                  Quarter; 24.26mm wide, 1.975mm deep

25mm (31/32")

26mm (1-1/32”)                Presidential $1: 26.49mm wide, 2.00mm deep

27mm (1-1/16”)

28mm (1-3/32")

29mm (1-1/8”)

30mm (1-3/16") 

31mm (1-7/32”)                Half Dollar: 30.61mm wide, 2.15mm deep

32mm (1-1/4")

33mm (1-5/16”)

34mm (1-11/32")

35mm (1-3/8")

36mm (1-13/32")

37mm (1-15/32”)

38mm (1-1/2")

39mm (1-17/32”)

40mm (1-9/16")