Use this useful tool to convert energy and work choosing one of the 53 units of measurment included in this app (with the availability to add custom units), that are:
joule, gigajoule, megajoule, kilojoule, millijoule, microjoule, nanojoule, attojoule, megaelectron-volt, kiloelectron-volt, electron-volt, erg, gigawatt-hour, megawatt-hour, kilowatt-hour, kilowatt-second, watt-hour, watt-second, newton meter, hoursepower hour, horsepower (metric) hour, kilocalorie (IT), kilocalorie (th), calorie (IT), calorie (th), calorie (nutritional), Btu (IT), Btu (th), mega Btu (IT), ton-hour (refrigeration), fuel oil equivalent @kiloliter", fuel oil equivalent @barrel, gigaton, megaton, kiloton, ton (explosives), dyne centimeter, gram-force meter, gram-force centimeter, kilogram-force centimeter, kilogram-force meter, kilopond meter, pound-force foot, pund-force inch, ounce-force inch, foot-pound, inch-pound, inch-ounce, Rydberg constant, Hartree energy, therm, therm (EC), therm (US).