Select the digital unit you would like to convert below     Area   acre square kilometer (km2) are  square meter (m2) hectare square mile square centimeter (cm2) square millimeter (mm2) square decimeter (cm2) square yard square foot (ft2)   Mass   dram pound (lb) grain quarter gram (g) stone hundredweight (cwt) ton kilogram (kg) tonne (or metric ton (t)) milligram (mg) U.S. ton ounce (oz)   Volume cubic centimeter (cc) gallon cubic decimeter (dm3) gill cubic foot (ft3) liter (l) cubic inch (in3) milliliter (ml) cubic meter (m3) pint cubic yard quart fluid drachma U.S. gallon fluid ounce (fl. oz.) U.S. pint Length   centimeter (cm) kilometer (km) chain meter (m) decimeter (dm) mile foot (ft) millimeter (mm) furlong rod hectometer yard inch (in)   Velocity   centimeter per second (cm/sec) knot foot per hour meter per minute foot per minute meter per second foot per second mile per hour (mph) kilometer per hour (km/h) mile per minute Force   crinal long ton (or imperial ton) dyne Newton grain ounce-force kilogram-force (kgf) poundal kilogram m/s2  pound-force (lbf) kip slug Flowrate   barrel per day cubic yard per minute cubic centimeter per second (cm3/sec) gallon per day cubic foot per minute (ft3/min) gallon per minute cubic foot per second (ft3/sec) gallon per second cubic inch per minute (in3/min) liter per minute cubic inch per second (in3/sec) liter per second cubic meter per hour (m3/hr) miner's inch Energy   BTU kilocalorie (kcal) cubic centimeter-atmosphere (cm3-atm) kilogram-calorie foot-pound-force (ft-lbf) kilowatt per hour (kWh) gram-calorie (g-cal) pound-CHU inch-pound-force (in-lbf) thermo calorie IST calorie U.S. horsepower per hour joule (J) watt per hour Power   BTU per hour gigawatt (GW) BTU per minute joule per second (J/sec) BTU per second kilowatt (kW) erg per second megawatt (MW) foot-pound-force per hour metric horsepower foot-pound-force per minute ton (refrigeration) foot-pound-force per second watt Pressure   bar Pascal (Pa) barye poundal per square foot inch H2O at 15.56 °Celsius poundal per square inch inch Hg at 15.56 ° Celsius pound per square foot (lb/ft2) kilogram-force per square centimeter (kgf/cm2) pound per square inch (lb/in2) kilogram-force per square meter (kgf/m2) short ton per square foot kilopascal (kPa) torr megapascal (mPa)   Temperature   Celsius Fahrenheit Kelvin

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Great Historical Battles

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