Length
1 angstrom = 1.00 x 10-10 meters
1 centimeter = 10 millimeters
1 foot = 30.48 centimeters
1 inch = 2.54 centimeters
1 kilometer = 1000 meters
1 kilometer = 0.62137 mile
1 meter = 100 centimeters
1 mile = 1609.344 meters
1 nanometer = 1.00 x 10-9 meters
1 picometer = 1.00 x 10-12 meters
1 yard = 30.48 centimeters
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Temperature
From Fahrenheit To Celsius
°C = (5/9)(°F-32)
From Celsius to Fahrenheit
°F = ((9/5)°C)+32
From Kelvin To Celsius
°C = °K-273.15
From Celsius to Kelvin
°K = °C+273.15
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Energy
1 calorie = 4.184 joules
1 electronvolt = 1.602176462E-19 joule
1 erg = 1E-7 joule
1 joule = 1 kg * m2/s2
1 joule = 0.23901 calorie
1 kilocalorie = 1000 calorie
1 kilowatt hour = 859.845227859 kilocalorie
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Pressure
1 atmosphere = 101.325 kilopascals
1 atmosphere = 760 mmHg
1 atmosphere = 760 torr
1 atmosphere = 14.69596432068 pounds/in2
1 atmosphere = 1.01325 bar
1 atmosphere = 1.0332274528 Kg/cm2
1 bar = 100000 Pascals
1 kilogram/m2 = 9.80665 pascal
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Mass
1 kilogram = 9.80665 newton
1 kilogram = 1000 grams
1 kilogram = 5000 carat(metric)
1 pound = 453.59237 grams
1 pound = 16 ounces
1 quarter = 12.70058636 kilograms
1 ton = 2000. pounds
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Volume
1 gallon = 4.00 quarts
1 gallon = 231 cubic inch(in3)
1 gallon = 3785.411784 cubic centimeter(cc)
1 gallon = 3.785411784 liter
1 liter (L) = 0.001 cubic meter(m3)
1 liter (L) = 1000 cubic centimeter(cc)
1 liter (L) = 1.056688209433 quarts
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Speed
1 kilometer/hour = 0.6213711922373 mile/hour
1 mile/hour = 1.609344 kilometer/hour
1 meter/second = 3.280839895013 foot/second
1 knot = 1.852 kilometer/hour
speed of light = 299792.458 kilometer/second
speed of sound = 343 meter/second
1 yard/second = 0.9144 meter/second
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Power
1 calories/second = 41868000 erg/second
1 horsepower = 745.6998715823 watt(jouls/sec)
1 horsepower = 0.7456998715823 kilowatt
1 watt(jouls/sec) = 10000000 erg/sec
1 kilocalorie/second = 4.1868 kilowatt
1 calories/second = 4.1868 watt
1 kilowatt = 1.341022089595 horsepower
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Angle
1 degree = 0.01745329251994 radians
1 radian = 57.29577951308 degrees
1 degree = 1.111111111111 grad
1 grad = 0.9 degrees
1 radian = 63.66197723676 grad
1 grad = 0.01570796326795 radians
full circle = 360 degrees
full circle = 400 grad
full circle = 6.283185307 radians
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