How many beads will you need to make your project?
Use this handy chart to figure it out.

Here is a handy chart that will help you determine the approximate number of beads needed.

Bead Size

Per Inch

7"

16"

24"

32"

36"

3mm

8.25

57

132

200

265

288

4mm

6.25

43

100

150

200

225

5mm

5.00

35

82

124

160

180

6mm

4.25

28

67

100

132

153

7mm

3.50

24

57

85

114

126

8mm

3.25

22

50

75

100

112

10mm

2.50

18

40

60

80

90

12mm

2.00

15

33

50

66

72

14mm

1.75

13

29

43

56

63

16mm

1.50

11

25

38

50

54

18mm

1.25

10

23

34

45

50

20mm

1.20

8

20

29

38

43

 

Remember to allow for the length of your clasp. If you use spacer beads or mix sizes this chart may not be accurate.

If the size bead you are working with is not on our chart here is the formula for calculating:
 

1" equals 25.4mm


Measure the bead you are working with. Take the length of your project and multiply the number of inches by 25.4mm, take that number and divide by the size of the bead.

 

This tip was from:

http://www.beadstudio.com/tips.php