Well, even without an Intel Inside Pentium Processor, you can calculate the number of beads needed for a strand using the following formula:
Just remember that 1-inch = 2.54cm = 25.4mm (1cm = 10mm). So, multiply the length of the necklace by 25.4 and divide by the size of the beads in millimeters.
1) 18-inch necklace made with 4mm beads:
Number of beads = 18x25.4/4 = 114
2) 32-inch necklace made with 6mm beads:
Number of beads = 32x25.4/6 = 135
Remember: since beads may be irregular, this number is approximate. Also, if you are knotting between the beads, add 1 or 2mm for each knot, depending on the thickness.
In case you don't remember...
|1 kilo||1000 grams||2.2 pounds|
|1/2 kilo||500 grams||1.1 pounds|
|1 gram||.035 ounces||...|
|1 ounce||28.35 grams||...|
|1 gross||12 dozen||144|
|1 mass||100 dozen||1,200|
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