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Weights & Measures

We have compiled charts and graphs of useful information including metric conversions, a chart of how many beads you might need based on size and description of some common units of measure used in the bead industry.

Here is a handy chart that will help you determine the approximate number of beads you need.
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 this chart here is the formula for calculating:
1" = 25.44mm
Measure the bead you are working with. Take the length of your project and multiply the number of inches by 25.44mm, take that number and divide by the size of the bead.

Beading Needles & Threads
Information to help you choose the right needle and thread size for you beadweaving projects. This information is based on English beading needles Nymo thread.
Bead Size Thread Size Needle Size
8 or Larger F Size 10
10 D Size 10
11/0, 12/0, Delica B Size 12
13 and 14 O Size 13
15 and smaller OO Size 15
Beading needles are standard for beadweaving.
Sharps are shorter and stiffer for bead embroidery.

Standard Measures
1 Gross (Gr) 144 pieces, 12 dozen, or 72 pair
1/2 Gross 72 pieces, 6 dozen, or 36 pair
1 Mass (Ms) 1,200 pieces, or 100 dozen
1 Mille (M) 1,000 pieces
Metric conversions
1 Inch 25.4 mm, or 2.54 cm
1 Ounce (Oz) 28.35 grams
1 Pound (Lb) 16 Ounces
1 Meter 39.4 inches, or 3.3 feet, or 1.1 yards
1 Millimeter (mm) 1/25th of an inch
1 Kilogram (Kilo, or K) 1,000 grams, or 2.2 lbs, or 35.27 oz.
1/2 Kilo 500 grams, 1.1 pound
1 Gram (G) .035 ounces
1 Centimeter (cm) 10mm

 
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