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Energy Converter
Convert between energy units including joules, calories, kilowatt-hours, BTU, and electronvolts.
Available Units (9)
Joules (J)Kilojoules (kJ)Calories (cal)Kilocalories (kcal)Watt-hours (Wh)Kilowatt-hours (kWh)BTU (BTU)Electronvolts (eV)Foot-pounds (ft·lbf)
All Energy Conversions (72)
Joules → Kilojoules
1 J = 0.001 kJ
Joules → Calories
1 J = 0.239006 cal
Joules → Kilocalories
1 J = 0.000239006 kcal
Joules → Watt-hours
1 J = 0.000277778 Wh
Joules → Kilowatt-hours
1 J = 2.7777800e-7 kWh
Joules → BTU
1 J = 0.000947817 BTU
Joules → Electronvolts
1 J = 6.242000e+18 eV
Joules → Foot-pounds
1 J = 0.737562 ft·lbf
Kilojoules → Joules
1 kJ = 1,000 J
Kilojoules → Calories
1 kJ = 239.006 cal
Kilojoules → Kilocalories
1 kJ = 0.239006 kcal
Kilojoules → Watt-hours
1 kJ = 0.277778 Wh
Kilojoules → Kilowatt-hours
1 kJ = 0.000277778 kWh
Kilojoules → BTU
1 kJ = 0.947817 BTU
Kilojoules → Electronvolts
1 kJ = 6.242000e+21 eV
Kilojoules → Foot-pounds
1 kJ = 737.562 ft·lbf
Calories → Joules
1 cal = 4.184 J
Calories → Kilojoules
1 cal = 0.004184 kJ
Calories → Kilocalories
1 cal = 0.0010000011 kcal
Calories → Watt-hours
1 cal = 0.0011622232 Wh
Calories → Kilowatt-hours
1 cal = 0.0000011622232 kWh
Calories → BTU
1 cal = 0.0039656663 BTU
Calories → Electronvolts
1 cal = 2.611653e+19 eV
Calories → Foot-pounds
1 cal = 3.08595941 ft·lbf
Kilocalories → Joules
1 kcal = 4,184 J
Kilocalories → Kilojoules
1 kcal = 4.184 kJ
Kilocalories → Calories
1 kcal = 1,000.001104 cal
Kilocalories → Watt-hours
1 kcal = 1.16222315 Wh
Kilocalories → Kilowatt-hours
1 kcal = 0.0011622232 kWh
Kilocalories → BTU
1 kcal = 3.96566633 BTU
Kilocalories → Electronvolts
1 kcal = 2.611653e+22 eV
Kilocalories → Foot-pounds
1 kcal = 3,085.959408 ft·lbf
Watt-hours → Joules
1 Wh = 3,600 J
Watt-hours → Kilojoules
1 Wh = 3.6 kJ
Watt-hours → Calories
1 Wh = 860.4216 cal
Watt-hours → Kilocalories
1 Wh = 0.8604216 kcal
Watt-hours → Kilowatt-hours
1 Wh = 0.0010000008 kWh
Watt-hours → BTU
1 Wh = 3.4121412 BTU
Watt-hours → Electronvolts
1 Wh = 2.247120e+22 eV
Watt-hours → Foot-pounds
1 Wh = 2,655.2232 ft·lbf
Kilowatt-hours → Joules
1 kWh = 3,600,000 J
Kilowatt-hours → Kilojoules
1 kWh = 3,600 kJ
Kilowatt-hours → Calories
1 kWh = 860,421.6 cal
Kilowatt-hours → Kilocalories
1 kWh = 860.4216 kcal
Kilowatt-hours → Watt-hours
1 kWh = 1,000.0008 Wh
Kilowatt-hours → BTU
1 kWh = 3,412.1412 BTU
Kilowatt-hours → Electronvolts
1 kWh = 2.247120e+25 eV
Kilowatt-hours → Foot-pounds
1 kWh = 2,655,223.2 ft·lbf
BTU → Joules
1 BTU = 1,055.06 J
BTU → Kilojoules
1 BTU = 1.05506 kJ
BTU → Calories
1 BTU = 252.16567036 cal
BTU → Kilocalories
1 BTU = 0.25216567 kcal
BTU → Watt-hours
1 BTU = 0.29307246 Wh
BTU → Kilowatt-hours
1 BTU = 0.00029307246 kWh
BTU → Electronvolts
1 BTU = 6.585685e+21 eV
BTU → Foot-pounds
1 BTU = 778.17216372 ft·lbf
Electronvolts → Joules
1 eV = 1.602000e-19 J
Electronvolts → Kilojoules
1 eV = 1.602000e-22 kJ
Electronvolts → Calories
1 eV = 3.828876e-20 cal
Electronvolts → Kilocalories
1 eV = 3.828876e-23 kcal
Electronvolts → Watt-hours
1 eV = 4.450004e-23 Wh
Electronvolts → Kilowatt-hours
1 eV = 4.450004e-26 kWh
Electronvolts → BTU
1 eV = 1.518403e-22 BTU
Electronvolts → Foot-pounds
1 eV = 1.181574e-19 ft·lbf
Foot-pounds → Joules
1 ft·lbf = 1.35582 J
Foot-pounds → Kilojoules
1 ft·lbf = 0.00135582 kJ
Foot-pounds → Calories
1 ft·lbf = 0.32404911 cal
Foot-pounds → Kilocalories
1 ft·lbf = 0.00032404911 kcal
Foot-pounds → Watt-hours
1 ft·lbf = 0.00037661697 Wh
Foot-pounds → Kilowatt-hours
1 ft·lbf = 3.7661697e-7 kWh
Foot-pounds → BTU
1 ft·lbf = 0.0012850692 BTU
Foot-pounds → Electronvolts
1 ft·lbf = 8.463028e+18 eV