The Principal Units of the Metric System

 

1 millimeter = 0.03937 inches

1 centimeter = 0.3937 inches

1 meter = 39.37 inches or 1.0936 yards

1 kilometer = 0.6214 miles

1 inch = 25.4 millimeters = 2.54 centimeters

1 foot = 304.8 millimeters = 0.3048 meters

1 yard = 0.9144 meters

1 mile = 1.609 kilometers

10 millimeters (mm) = 1 centimeter (cm)

10 centimeters = 1 decimeter (dm)

10 decimeters = 1 meter (m)

10 meters = 1 decameter (Dm)

10 decameters = 1 hectometer (Hm)

10 kilometers = 1 myriameter

1 square milimeter - 0.00155 square inches

1 square centimeter = 0.155 square inches

1 square meter = 10.764 square feet

1 are = 1076 square feet

1 hectare = 107.650 square feet

1 gallon U.S. = 3.785 liters

1 gallon British = 4.543 liters

1 gram = 0.03216 ounce troy

1 gram = 0.03527 ounce avoirdupois

1 gram = 15.432 grains

1 kilogram = 2.2046 pounds avoirdupois

1 metric ton = 2204.6 pounds

1 grain = 0,0648 grams

1 ounce troy - 31.103 grams

1 ounce avoirdupois = 28.35 grams

1 pound = 435.6 grams

1 U.S. ton of 2000 pounds = 907.2 kilograms

1 square kilometer = 0.3861 square miles

1 square inch = 6.452 square centimeters

1 square foot = 929 square centimeters

1 square yard = 0.836 square meters

1 square mile = 2.5899 square kilometers

1 liter = 61.023 cubic inches

1 liter = 1.0567 U.S. quarts

1 liter = 0.2642 U.S. gallons

1 cubic inch = 16.383 cubic centimeters

1 cubic foot = 0.02832 cubic meters

1 cubic yard = 0.7645 cubic meters