Metric and English Equiv alents Linear Measure Metric to Inch Inch to Metric 1 millimeter = 0.03937 inch 1 inch = 25.4 millimeters = 2.54 centimeters 1 centimeter = 0.3937 inch 1 foot = 304.8 millimeters = 0.3048 meter 1 meter = 39.37 inches = 3.2808 feet = 1.0936 yards 1 yard = 0.9144 meter 1 kilometer = 0.6214 mile 1 mile = 1.609 kilometers Square Measure Metric to Inch Inch to Metric 1 square millimeter = 0.00155 square inch 1 square inch = 6.452 square centimeters = 645.2 square millimeters 1 square centimeter = 0.155 square inch 1 square foot = 0.0929 square meter = 929 square centimeters 1 square meter = 10.764 square feet = 1.196 square yards 1 square yard = 0.836 square meter 1 are = 0.0247 acre = 1076.4 square feet 1 acre = 0.4047 hectare = 40.47 ares 1 hectare = 2.471 acres = 107,639 square feet 1 square mile = 2.5900 square kilometers 1 square kilometer = 0.3861 square mile = 247.1 acres Cubic Measure Metric to English English to Metric 1 liter = 0.2642 U.S. gallon = 1.0567 U.S. quarts 1 U.S. quart = 0.946 liter 1 liter (cubic decimeter) = 0.0353 cubic foot = 61.024 cubic inches 1 U.S. gallon = 3.785 liters = 231 cubic inches 1 cubic centimeter = 0.061 cubic inch 1 cubic inch = 16.38706 cubic centimeters 1 cubic meter = 264.2 U.S. gallons 1 cubic foot = 0.02832 cubic meter = 28.317 liters 1 cubic meter = 35.315 cubic feet = 1.308 cubic yards 1 cubic yard = 0.7646 cubic meter Weight Metric to English English to Metric 1 gram = 15.432 grains 1 grain = 0.0648 gram 1 gram = 0.03527 ounce avoirdupois (Commercial) 1 ounce avoirdupois (Commercial) = 28.35 grams 1 kilogram = 2.2046 pounds = 35.274 ounces avoirdupois (Commercial) 1 pound = 0.4536 kilogram = 453.6 grams 1 metric ton = 0.9842 ton (of 2240 pounds) = 2204.6 pounds 1 short ton (2,000 pounds) = .907 metric ton = 907 kilograms 578 R eference T ables