Length Conversion Constants for Metric and U.S. Units
Millimeters X .039370 = inches
Meters x 39.370 = inches
Meters X 3.2808 = feet
Meters X 1.09361 = yards
Kilometers X 3,280.8 = feet
Kilometers X .62137 = Statute Miles
Kilometers x .53959 = Nautical Miles
Inches X 25.4001 = millimeters
Inches X .0254 = meters
Feet x .30480 = meters
Yards X .91440 = meters
Feet x .0003048 = kilometers
Statute Miles X 1.60935 = kilometers
Nautical Miles x 1.85325 = kilometers

Weight Conversion Constants for Metric and U.S. Units
Grams X 981 = dynes
Grams X 15.432 = grains
Grams X .03527 = ounces (Avd.)
Grams x .033818 = fluid ounces (water)
Kilograms X 35.27 = ounces (Avd.)
Kilograms X 2.20462 = pounds (Avd.)
Metric Tons (1000 Kg.) X 1.10231 = Net Ton (2000 lbs.)
Metric Tons (1000 Kg.) X .98421 = Gross Ton (2240 lbs.)
Dynes X .0010193 = grams
Grains X .0648 = grams
Ounces (Avd.) X 28.35 = grams
Fluid Ounces (Water) X 29.57 = grams
Ounces (Avd.) X .02835 = kilograms
Pounds (Avd.) X .45359 = kilograms
Net Ton (2000 lbs.) X .90719 = Metric Tons (1000 Kg.)
Gross Ton (2240 Ibs.) X 1.01605 = Metric Tons (1000 Kg.)

Area Conversion Constants for Metric and U.S. Units
Square Millimeters X .00155 = square inches
Square centimeters X .155 = square inches
Square Meters X 10.76387 = square feet
Square Meters X 1.19599 = square yards
Hectares X 2.47104 = acres
Square Kilometers X 247.104 = acres
Square Kilometers X .3861 = square miles
Square Inches X 645.163 = square millimeters
Square Inches x 6.45163 = square centimeters
Square Feet x .0929 = square meters
Square Yards X .83613 = square meters
Acres X .40469 = hectares
Acres X .0040469 = square kilometers
Square Miles X 2.5899 = square kilometers

Volume Conversion Constants for Metric and U.S. Units
Cubic centimeters X .033818 = fluid ounces
Cubic centimeters X .061023 = cubic inches
Cubic centimeters X .271 = fluid drams
Liters X 61.023 = cubic inches
Liters X 1.05668 = quarts
Liters X .26417 = gallons
Liters X .035317 = cubic feet
Hectoliters X 26.417 = gallons
Hectoliters X 3.5317 = cubic feet
Hectoliters X 2.83794 = bushel (2150.42 cu. in.)
Hectoliters X .1308 = cubic yards
Cubic Meters x 264.17 = gallons
Cubic Meters x 35.317 = cubic feet
Cubic Meters X 1.308 = cubic yards
Fluid Ounces X 29.57 = cubic centimeters
Cubic Inches X 16.387 = cubic centimeters
Fluid Drams x 3.69 = cubic centimeters
Cubic Inches X .016387 = liters
Quarts x .94636 = liters
Gallons x 3.78543 = liters
Cubic Feet x 28.316 = liters
Gallons x .0378543 = hectoliters
Cubic Feet x .28316 = hectoliters
Bushels (2150.42 cu. in.) X .352379 = hectoliters
Cubic Yards x 7.645 = hectoliters
Gallons x .00378543 = cubic meters
Cubic Feet x .028316 = cubic meters
Cubic Yards x .7645 = cubic meters

Power and Heat Conversion Constants for Metric and U.S. Units
Calorie x 0.003968 = B.T.U.
Joules X .7373 = pound-feet
Newton-Meters X 8.851 = pound-inches
Cheval Vapeur X .9863 = Horsepower
Kilowatts X 1.34 = Horsepower
Kilowatt Hours X 3415 = B.T.U
(Degrees Cent. X 1.8) +32 = degrees Fahr
(Degrees Reamur X 2.25) + 32 = degrees Fahr
B.T.U. X 252 = calories
Pound-Feet X 1.3563 = joules
Pound-inches X .11298 = Newton-meters
Horsepower X 1.014 = Cheval Vapeur
Horsepower X .746 = kilowatts
B.T.U. X .00029282 = kilowatt hours
(Degrees Fahr. - 32) x .555 = degrees Cent
(Degrees Fahr. - 32) x .444 = degrees Reamur