The metric system is used by most nations of the world. Because many bead and jewelry items are made overseas, it's important to understand the realtionship between the metric system and the US system. Here are the most commonly used conversions between the two systems.

 

Lengths

1 foot = 30.48 cm
1 yard = 0.914 meters = 3 ft
1 meter (m) = 100 cm = 1.094 yds
.025 millimeters = 0.001 in
1 millimeter (mm) = 0.0394 in
1 centimeter (cm) = 10 mm = .3937 in
1 inch (in) = 2.54 cm
1 kilometer (km) = 1000 m = 0.6214 miles


Quick Length Conversion Factors

inches x 25.4 = millimeters
feet x 30 = centimeters
yards x 0.9 = meters
miles x 1.6 = kilometers
millimeters x 0.04 = inches
centimeters x 0.4 = inches
meters x 1.1 = yards
kilometers x 0.62 = miles


Weights

1 ounce (oz) = 28.35 g
1 gram (g) = 1,000 milligrams (mg) = 0.0353 oz
1 pound (lb) = 16 oz = 0.4536 kg = 453.59 g
1 kilogram (kg) = 1,000 g = 2.2046 lb
1 stone = 14 lb = 6.3503 kg


Quick Weight Conversion Factors

ounces x 30 = grams
pounds x 0.45 = kilograms
grams x 0.335 = ounces
kilograms x 2.2 = pounds