Energy converter

12 units, SI unit J. Every conversion runs through the SI base value, so round-trips are exact.

1 BTU = 1,060 J
1 BTU in every energy unit
joule1,060 J
kilojoule1.06 kJ
megajoule0.00106 MJ
calorie252 cal
kilocalorie0.252 kcal
watt-hour0.293 Wh
kilowatt-hour0.000293 kWh
British thermal unit1 BTU
foot-pound778 ft⋅lb
electron volt6.59e+21 eV
kiloelectron volt6.59e+18 keV
megaelectron volt6.59e+15 MeV
One joule in every unit
joule (J)1 J
kilojoule (kJ)0.001 kJ
megajoule (MJ)0.000001 MJ
calorie (cal)0.23900574 cal
kilocalorie (kcal)0.00023900574 kcal
watt-hour (Wh)0.00027777778 Wh
kilowatt-hour (kWh)2.7777778e-07 kWh
British thermal unit (BTU)0.00094781712 BTU
foot-pound (ft⋅lb)0.73756215 ft⋅lb
electron volt (eV)6.2415091e+18 eV
kiloelectron volt (keV)6.2415091e+15 keV
megaelectron volt (MeV)6,241,509,100,000 MeV