Metric system   10 millimeters (mm) = 1 centimeter (cm) = 0.394 inch   1 inch = 25.4 mm = 2.54 cm 12 inches = 1 foot = 30.48 cm     1000 grams (g) = 1 kilograms (kg) = 2.205 pounds   1 ounce = 28.35 g 16 ounces = 1 pound = 0.454 kg