Energy Converter

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Joules
Calories
Watts x Time
Thermal Units
Electronvolts

Units of Energy Measurement

Units of energy include joules, kilojoules, megajoules, gigajoules, calories, kilocalories, megacalories, watt-hours, kilowatt-hours, megawatt-hours, watt-seconds, british thermal units, million BTU, therms, quads, electronvolts, kiloelectronvolts, and megaelectronvolts.

Energy Unit Conversion Table

Equivalent metric and imperial energy measurements
Convert From Joule Kilojoule Megajoule Gigajoule Calorie Kilocalorie Megacalorie Watt-hour Kilowatt-hour Megawatt-hour Watt-second British Thermal Unit Million BTU Therm Quad Electronvolt Kiloelectronvolt Megaelectronvolt
1 joule = 1 J 0.001 kJ 0.000001 MJ 0.000000001 GJ 0.239006 cal 0.000239 kcal 0.00000023901 Mcal 0.000278 Wh 0.00000027778 kWh 0.00000000027778 MWh 1 Ws 0.000948 BTU 0.00000000094782 MMBTU 0.0000000094782 0.00000000000000000094782 6,241,500,000,000,000,000 eV 6,241,500,000,000,000 keV 6,241,509,343,260 MeV
1 kilojoule = 1,000 J 1 kJ 0.001 MJ 0.000001 GJ 239.005736 cal 0.239006 kcal 0.000239 Mcal 0.277778 Wh 0.000278 kWh 0.00000027778 MWh 1,000 Ws 0.947817 BTU 0.00000094782 MMBTU 0.0000094782 0.00000000000000094782 6,241,499,999,999,999,606,784 eV 6,241,500,000,000,000,000 keV 6,241,500,000,000,000 MeV
1 megajoule = 1,000,000 J 1,000 kJ 1 MJ 0.001 GJ 239,006 cal 239.005736 kcal 0.239006 Mcal 277.777778 Wh 0.277778 kWh 0.000278 MWh 1,000,000 Ws 947.81712 BTU 0.000948 MMBTU 0.009478 0.00000000000094782 6,241,499,999,999,999,833,276,416 eV 6,241,499,999,999,999,606,784 keV 6,241,500,000,000,000,000 MeV
1 gigajoule = 1,000,000,000 J 1,000,000 kJ 1,000 MJ 1 GJ 239,005,736 cal 239,006 kcal 239.005736 Mcal 277,778 Wh 277.777778 kWh 0.277778 MWh 1,000,000,000 Ws 947,817 BTU 0.947817 MMBTU 9.478171 0.00000000094782 6,241,500,000,000,000,443,161,772,032 eV 6,241,499,999,999,999,833,276,416 keV 6,241,499,999,999,999,606,784 MeV
1 calorie = 4.184 J 0.004184 kJ 0.000004184 MJ 0.000000004184 GJ 1 cal 0.001 kcal 0.000001 Mcal 0.001162 Wh 0.0000011622 kWh 0.0000000011622 MWh 4.184 Ws 0.003966 BTU 0.0000000039657 MMBTU 0.000000039657 0.0000000000000000039657 26,114,000,000,000,000,000 eV 26,114,000,000,000,000 keV 26,114,475,092,201 MeV
1 kilocalorie = 4,184 J 4.184 kJ 0.004184 MJ 0.000004184 GJ 1,000 cal 1 kcal 0.001 Mcal 1.162222 Wh 0.001162 kWh 0.0000011622 MWh 4,184 Ws 3.965667 BTU 0.0000039657 MMBTU 0.000039657 0.0000000000000039657 26,113,999,999,999,999,475,712 eV 26,114,000,000,000,000,000 keV 26,114,000,000,000,000 MeV
1 megacalorie = 4,184,000 J 4,184 kJ 4.184 MJ 0.004184 GJ 1,000,000 cal 1,000 kcal 1 Mcal 1,162 Wh 1.162222 kWh 0.001162 MWh 4,184,000 Ws 3,966 BTU 0.003966 MMBTU 0.039657 0.0000000000039657 26,113,999,999,999,997,898,653,696 eV 26,113,999,999,999,999,475,712 keV 26,114,000,000,000,000,000 MeV
1 watt-hour = 3,600 J 3.6 kJ 0.0036 MJ 0.0000036 GJ 860.42065 cal 0.860421 kcal 0.00086 Mcal 1 Wh 0.001 kWh 0.000001 MWh 3,600 Ws 3.412142 BTU 0.0000034121 MMBTU 0.000034121 0.0000000000000034121 22,469,000,000,000,000,786,432 eV 22,469,000,000,000,000,000 keV 22,469,000,000,000,000 MeV
1 kilowatt-hour = 3,600,000 J 3,600 kJ 3.6 MJ 0.0036 GJ 860,421 cal 860.42065 kcal 0.860421 Mcal 1,000 Wh 1 kWh 0.001 MWh 3,600,000 Ws 3,412 BTU 0.003412 MMBTU 0.034121 0.0000000000034121 22,469,000,000,000,001,323,302,912 eV 22,469,000,000,000,000,786,432 keV 22,469,000,000,000,000,000 MeV
1 megawatt-hour = 3,600,000,000 J 3,600,000 kJ 3,600 MJ 3.6 GJ 860,420,650 cal 860,421 kcal 860.42065 Mcal 1,000,000 Wh 1,000 kWh 1 MWh 3,600,000,000 Ws 3,412,142 BTU 3.412142 MMBTU 34.121416 0.0000000034121 22,468,999,999,999,999,364,797,825,024 eV 22,469,000,000,000,001,323,302,912 keV 22,469,000,000,000,000,786,432 MeV
1 watt-second = 1 J 0.001 kJ 0.000001 MJ 0.000000001 GJ 0.239006 cal 0.000239 kcal 0.00000023901 Mcal 0.000278 Wh 0.00000027778 kWh 0.00000000027778 MWh 1 Ws 0.000948 BTU 0.00000000094782 MMBTU 0.0000000094782 0.00000000000000000094782 6,241,500,000,000,000,000 eV 6,241,500,000,000,000 keV 6,241,509,343,260 MeV
1 british thermal unit = 1,055 J 1.055056 kJ 0.001055 MJ 0.0000010551 GJ 252.164401 cal 0.252164 kcal 0.000252 Mcal 0.293071 Wh 0.000293 kWh 0.00000029307 MWh 1,055 Ws 1 BTU 0.000001 MMBTU 0.00001 0.000000000000001 6,585,100,000,000,000,131,072 eV 6,585,100,000,000,000,000 keV 6,585,100,000,000,000 MeV
1 million BTU = 1,055,055,853 J 1,055,056 kJ 1,055 MJ 1.055056 GJ 252,164,401 cal 252,164 kcal 252.164401 Mcal 293,071 Wh 293.07107 kWh 0.293071 MWh 1,055,055,853 Ws 1,000,000 BTU 1 MMBTU 10 0.000000001 6,585,100,000,000,000,286,429,020,160 eV 6,585,100,000,000,000,458,227,712 keV 6,585,100,000,000,000,131,072 MeV
1 therm = 105,505,585 J 105,506 kJ 105.505585 MJ 0.105506 GJ 25,216,440 cal 25,216 kcal 25.21644 Mcal 29,307 Wh 29.307107 kWh 0.029307 MWh 105,505,585 Ws 100,000 BTU 0.1 MMBTU 1 0.0000000001 658,510,000,000,000,028,642,902,016 eV 658,509,999,999,999,992,135,680 keV 658,510,000,000,000,065,536 MeV
1 quad = 1,055,100,000,000,000,000 J 1,055,100,000,000,000 kJ 1,055,055,852,620 MJ 1,055,055,853 GJ 252,160,000,000,000,000 cal 252,160,000,000,000 kcal 252,164,400,722 Mcal 293,070,000,000,000 Wh 293,071,070,172 kWh 293,071,070 MWh 1,055,100,000,000,000,000 Ws 1,000,000,000,000,000 BTU 1,000,000,000 MMBTU 10,000,000,000 1 6,585,099,999,999,999,807,801,088,461,852,639,232 eV 6,585,099,999,999,999,770,907,600,314,433,536 keV 6,585,100,000,000,000,374,389,950,382,080 MeV
1 electronvolt = 0.00000000000000000016022 J 0.00000000000000000000016022 kJ 0.00000000000000000000000016022 MJ 0.00000000000000000000000000016022 GJ 0.000000000000000000038293 cal 0.000000000000000000000038293 kcal 0.000000000000000000000000038293 Mcal 0.000000000000000000000044505 Wh 0.000000000000000000000000044505 kWh 0.000000000000000000000000000044505 MWh 0.00000000000000000016022 Ws 0.00000000000000000000015186 BTU 0.00000000000000000000000000015186 MMBTU 0.0000000000000000000000000015186 0.00000000000000000000000000000000000015186 1 eV 0.001 keV 0.000001 MeV
1 kiloelectronvolt = 0.00000000000000016022 J 0.00000000000000000016022 kJ 0.00000000000000000000016022 MJ 0.00000000000000000000000016022 GJ 0.000000000000000038293 cal 0.000000000000000000038293 kcal 0.000000000000000000000038293 Mcal 0.000000000000000000044505 Wh 0.000000000000000000000044505 kWh 0.000000000000000000000000044505 MWh 0.00000000000000016022 Ws 0.00000000000000000015186 BTU 0.00000000000000000000000015186 MMBTU 0.0000000000000000000000015186 0.00000000000000000000000000000000015186 1,000 eV 1 keV 0.001 MeV
1 megaelectronvolt = 0.00000000000016022 J 0.00000000000000016022 kJ 0.00000000000000000016022 MJ 0.00000000000000000000016022 GJ 0.000000000000038293 cal 0.000000000000000038293 kcal 0.000000000000000000038293 Mcal 0.000000000000000044505 Wh 0.000000000000000000044505 kWh 0.000000000000000000000044505 MWh 0.00000000000016022 Ws 0.00000000000000015186 BTU 0.00000000000000000000015186 MMBTU 0.0000000000000000000015186 0.00000000000000000000000000000015186 1,000,000 eV 1,000 keV 1 MeV

Common Energy Measurement Conversions

Joules to british thermal units energy conversion
1 joule is equal to 0.000948 british thermal units
Joules to watt-hours energy conversion
1 joule is equal to 0.000278 watt-hours
Joules to electronvolts energy conversion
1 joule is equal to 6,241,500,000,000,000,000 electronvolts
Watt-hours to joules energy conversion
1 watt-hour is equal to 3,600 joules
Watt-hours to british thermal units energy conversion
1 watt-hour is equal to 3.412142 british thermal units
Watt-hours to electronvolts energy conversion
1 watt-hour is equal to 22,469,000,000,000,000,786,432 electronvolts
British Thermal Units to joules energy conversion
1 british thermal unit is equal to 1,055 joules
British Thermal Units to watt-hours energy conversion
1 british thermal unit is equal to 0.293071 watt-hours
British Thermal Units to electronvolts energy conversion
1 british thermal unit is equal to 6,585,100,000,000,000,131,072 electronvolts

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