If you have millimeters (or centimeters), and you want inches: ... If you are trying to figure out how many 6mm beads you need for a 20" necklace, you can use...
20mm slightly less than 13/16 Inch. 0.787. 21mm slightly more than 13/16 Inch. 0.826. 22mm slightly less than 7/8 Inch. 0.866. 23mm slightly more than 7/8 Inch.1 页
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