Basic Units Conversion

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The three basic metric units are the meter (length), the gram (weight), and the liter (volume). The key to metric prefixes are: 1000 = kilo.; 100 = hecto.; 10 = deca.; 0.1 = deci.; 0.01 = centi.; 0.001 milli. Length 1 kilometer 0.62137 mile 1 meter 3.2808 feet 1 centimeter 0.3937 inch 1 mile 1.6093 kilometers 1 foot 0.3048 meter 1 inch 2.54 centimeters Weight 1 kilogram 2.2046 lbs. 1 gram 0.0353 ounce 1 short ton 907.1847 kilos 1 pound 0.4536 kilo 1 ounce 28.3495 grams Volume 1 hectoliter 100 liters 0.1 cu. meter 26.4172 gallons 1 liter 100 centiliters 1 cu. decimeter 1.0567 quarts 1 gallon (U.S.) 3.7853 liters     1 cu. inch 16.3871 cu. cm     Area 1 sq. kilometer 1 million sq. meters 0.3861 sq. mile 1 hectare 10,000 sq. meters 2.471 acres 1 sq. meter 10.7639 sq. feet 1550.003 sq. inches 1 sq. mile 640 acres 258.9988 hectares 1 sq. foot 144 sq. inches 929.0304 sq. centimeters     Symbol If You Know Multiply By To Find Symbol Length mm cm m m km in ft yd mi millimeters centimeters meters meters kilometers inches feet yards miles 0.03937 0.3937 3.3 1.1 0.6 2.54 30.48 0.9 1.6 inches inches feet yards miles centimeters centimeters meters kilometers in in ft yd mi cm cm m km Area cm² m² km² ha² in² ft² yd² mi² sq. centimeters sq. meters sq. kilometers hectares (10000 m²) sq. inches sq. feet sq. yards sq. miles 0.16 1.2 0.4 2.5 6.5 0.09 0.8 2.6 sq. inches sq. yards sq. miles acres sq. centimeters sq. meters sq. meters sq. kilometers in² yd² mi² cm² m² m² km² Weight g kg t oz lb grams kilograms tonnes (1000 kg) ounces pounds 0.035 2.2046 1.1 28.3495 0.45 ounce pounds short tons grams kilograms oz lb g kg Volume ml l l l m³ m³ tsp tbsp fl oz c pt qt gal ft³ yd³ milliliters liters liters liters cu. meters cu. meters teaspoons tablespoons fluid ounces cups pints quarts gallons cu. feet cu. yards 0.03 2.1 1.06 0.26 35.314 1.3 5 15 30 0.24 0.47 0.95 3.8 0.03 0.76 fluid ounces pints quarts gallons cu. feet cu. yards millimeters millimeters millimeters liters liters liters liters cu. meters cu. meters fl oz pt qt gal ft³ yd³ ml ml ml l l l l m³ m³