# Formulas Measures

 Customary Metric Length 1 foot (ft) = 12 inches (in.) 1 yard (yd) = 36 in. 1 yd = 3 ft 1 mile (mi) = 5,280 ft 1 mi = 1,760 yd Length 1 centimeter (cm) = 10 millimeters (mm) 1 meter (m) = 100 cm 1 kilometer (km) = 1,000 m 1 mm = 0.001 m Area 1 square foot (ft2) = 144 square inches (in.2) 1 square yard (yd2) = 9 ft2 1 square mile (mi2) = 640 acres Area 1 square centimeter (cm2) = 100 square millimeters (mm2) 1 square meter (m2) = 10,000 cm2 Volume 1 cubic foot (ft3) = 1,728 cubic inches (in.3) 1 cubic yard (yd3) = 27 ft3 Volume 1 cubic centimeter (cm3) = 1,000 cubic millimeters (mm3) 1 cubic meter (m3) = 1,000,000 cm3 Mass 1 pound (lb) = 16 ounces (oz) 1 ton (t) = 2,000 lb Mass 1 gram (g) = 1,000 milligrams (mg) 1 kilogram (kg) = 1,000 g Capacity 1 cup (c) = 8 fluid ounces (fl oz) 1 pint (pt) = 2 c 1 quart (qt) = 2 pt 1 gallon (gal) = 4 qt Capacity 1 liter (L) = 1,000 milliliters (mL) 1000 liters = 1 kiloliter (kL)
 Customary Units and Metric Units Length 1 in. = 2.54 cm 1 mi ≈ 1.61 km 1 ft ≈ 0.3 m Capacity 1 qt ≈ 0.94 L Weight and Mass 1 oz ≈ 28.3 g 1 lb ≈ 0.45 kg

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