Energy Converter

Convert between any two energy units instantly

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Every energy unit on this page converts to and from the joule [J] as a common reference point, so any of the 54 units below can be converted to any other.

Popular Energy Unit Conversions

Complete List of Energy Units for Conversion

1 kilojoule [kJ] = 1000 joule [J]kilojoule to joule, joule to kilojoule
1 kilowatt-hour [kW*h] = 3600000 joule [J]kilowatt-hour to joule, joule to kilowatt-hour
1 watt-hour [W*h] = 3600 joule [J]watt-hour to joule, joule to watt-hour
1 calorie (nutritional) = 4186.8 joule [J]calorie (nutritional) to joule, joule to calorie (nutritional)
1 horsepower (metric) hour = 2647795.5 joule [J]horsepower (metric) hour to joule, joule to horsepower (metric) hour
1 Btu (IT) [Btu (IT), Btu] = 1055.05585262 joule [J]Btu (IT) to joule, joule to Btu (IT)
1 Btu (th) [Btu (th)] = 1054.3499999744 joule [J]Btu (th) to joule, joule to Btu (th)
1 gigajoule [GJ] = 1000000000.0 joule [J]gigajoule to joule, joule to gigajoule
1 megajoule [MJ] = 1000000.0 joule [J]megajoule to joule, joule to megajoule
1 millijoule [mJ] = 0.001 joule [J]millijoule to joule, joule to millijoule
1 microjoule [μJ] = 1.0E-6 joule [J]microjoule to joule, joule to microjoule
1 nanojoule [nJ] = 1.0E-9 joule [J]nanojoule to joule, joule to nanojoule
1 attojoule [aJ] = 1.0E-18 joule [J]attojoule to joule, joule to attojoule
1 megaelectron-volt [MeV] = 1.6021766339999E-13 joule [J]megaelectron-volt to joule, joule to megaelectron-volt
1 kiloelectron-volt [keV] = 1.6021766339999E-16 joule [J]kiloelectron-volt to joule, joule to kiloelectron-volt
1 electron-volt [eV] = 1.6021766339999E-19 joule [J]electron-volt to joule, joule to electron-volt
1 erg = 1.0E-7 joule [J]erg to joule, joule to erg
1 gigawatt-hour [GW*h] = 3600000000000.0 joule [J]gigawatt-hour to joule, joule to gigawatt-hour
1 megawatt-hour [MW*h] = 3600000000.0 joule [J]megawatt-hour to joule, joule to megawatt-hour
1 kilowatt-second [kW*s] = 1000 joule [J]kilowatt-second to joule, joule to kilowatt-second
1 watt-second [W*s] = 1 joule [J]watt-second to joule, joule to watt-second
1 newton meter [N*m] = 1 joule [J]newton meter to joule, joule to newton meter
1 horsepower hour [hp*h] = 2684519.5368856 joule [J]horsepower hour to joule, joule to horsepower hour
1 kilocalorie (IT) [kcal (IT)] = 4186.8 joule [J]kilocalorie (IT) to joule, joule to kilocalorie (IT)
1 kilocalorie (th) [kcal (th)] = 4184 joule [J]kilocalorie (th) to joule, joule to kilocalorie (th)
1 calorie (IT) [cal (IT), cal] = 4.1868 joule [J]calorie (IT) to joule, joule to calorie (IT)
1 calorie (th) [cal (th)] = 4.184 joule [J]calorie (th) to joule, joule to calorie (th)
1 mega Btu (IT) [MBtu (IT)] = 1055055852.62 joule [J]mega Btu (IT) to joule, joule to mega Btu (IT)
1 ton-hour (refrigeration) = 12660670.23144 joule [J]ton-hour (refrigeration) to joule, joule to ton-hour (refrigeration)
1 fuel oil equivalent @kiloliter = 40197627984.822 joule [J]fuel oil equivalent @kiloliter to joule, joule to fuel oil equivalent @kiloliter
1 fuel oil equivalent @barrel (US) = 6383087908.3509 joule [J]fuel oil equivalent @barrel (US) to joule, joule to fuel oil equivalent @barrel (US)
1 gigaton [Gton] = 4.184E+18 joule [J]gigaton to joule, joule to gigaton
1 megaton [Mton] = 4.184E+15 joule [J]megaton to joule, joule to megaton
1 kiloton [kton] = 4184000000000.0 joule [J]kiloton to joule, joule to kiloton
1 ton (explosives) = 4184000000.0 joule [J]ton (explosives) to joule, joule to ton (explosives)
1 dyne centimeter [dyn*cm] = 1.0E-7 joule [J]dyne centimeter to joule, joule to dyne centimeter
1 gram-force meter [gf*m] = 0.00980665 joule [J]gram-force meter to joule, joule to gram-force meter
1 gram-force centimeter = 9.80665E-5 joule [J]gram-force centimeter to joule, joule to gram-force centimeter
1 kilogram-force centimeter = 0.0980665 joule [J]kilogram-force centimeter to joule, joule to kilogram-force centimeter
1 kilogram-force meter = 9.8066499997 joule [J]kilogram-force meter to joule, joule to kilogram-force meter
1 kilopond meter [kp*m] = 9.8066499997 joule [J]kilopond meter to joule, joule to kilopond meter
1 pound-force foot [lbf*ft] = 1.3558179483 joule [J]pound-force foot to joule, joule to pound-force foot
1 pound-force inch [lbf*in] = 0.112984829 joule [J]pound-force inch to joule, joule to pound-force inch
1 ounce-force inch [ozf*in] = 0.0070615518 joule [J]ounce-force inch to joule, joule to ounce-force inch
1 foot-pound [ft*lbf] = 1.3558179483 joule [J]foot-pound to joule, joule to foot-pound
1 inch-pound [in*lbf] = 0.112984829 joule [J]inch-pound to joule, joule to inch-pound
1 inch-ounce [in*ozf] = 0.0070615518 joule [J]inch-ounce to joule, joule to inch-ounce
1 poundal foot [pdl*ft] = 0.04214011 joule [J]poundal foot to joule, joule to poundal foot
1 therm = 105505600 joule [J]therm to joule, joule to therm
1 therm (EC) = 105505600 joule [J]therm (EC) to joule, joule to therm (EC)
1 therm (US) = 105480400 joule [J]therm (US) to joule, joule to therm (US)
1 Hartree energy = 4.3597482E-18 joule [J]Hartree energy to joule, joule to Hartree energy
1 Rydberg constant = 2.1798741E-18 joule [J]Rydberg constant to joule, joule to Rydberg constant