Standard Jewelry Lengths and Number of Beads Needed

See what a range of necklace sizes look like, get standards for bracelets and anklets, and find out how many beads you’ll need to achieve them with these charts and information blocks.

Women's Jewelry
Type Average Length
Collar 12 to 13 inches
Choker 14 to 16 inches
Princess 17 to 19 inches
Matinee 20 to 24 inches
Opera 28 to 34 inches
Rope 45 inches or longer
Bracelet 7 to 8 inches
Anklet 9 to 10 inches
Type Average Length
Necklace 18 to 24 inches
Bracelet 8 to 11 inches
Anklet 11 to 14 inches


Depicted women's necklace lengths are: 18-inch, 20-inch, 24-inch, 30-inch and 36-inch


Depicted men's necklace lengths are: 18-inch, 20-inch, 24-inch

But how many beads will I need?

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...

Conversion Chart

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
1/2 gross 72 ...
1 mass 100 dozen 1,200
1-inch 2.54cm ...
1cm 10mm ...
1m 100cm ...

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