Energy Converter

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.

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