# Megajoule Conversion Calculator

Enter a value in megajoules below to convert to another unit of energy.

## What Is a Megajoule?

A megajoule is a unit used to measure energy.

The megajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "mega" is the prefix for millions, or 106. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ.

## How Much Is a Megajoule?

One megajoule is equal to 1,000,000 joules, which is the energy equal to the force on an object of one newton at a distance of one meter.

## How to Convert Megajoules

To convert megajoules to another unit of energy, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[1]

You can find the conversion factors for megajoules in the conversion table below.

Then, multiply the energy measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

megajoules × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

## Megajoule Conversion Table

Common megajoule values and equivalent imperial and metric energy measurements
megajoules joules kilojoules gigajoules calories kilocalories megacalories watt-hours kilowatt-hours megawatt-hours watt-seconds british thermal units million BTU therms quads electronvolts kiloelectronvolts megaelectronvolts
1 MJ 1,000,000 J 1,000 kJ 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
2 MJ 2,000,000 J 2,000 kJ 0.002 GJ 478,011 cal 478.011472 kcal 0.478011 Mcal 555.555556 Wh 0.555556 kWh 0.000556 MWh 2,000,000 Ws 1,896 BTU 0.001896 MMBTU 0.018956 0.0000000000018956 12,482,999,999,999,999,666,552,832 eV 12,482,999,999,999,999,213,568 keV 12,483,000,000,000,000,000 MeV
3 MJ 3,000,000 J 3,000 kJ 0.003 GJ 717,017 cal 717.017208 kcal 0.717017 Mcal 833.333333 Wh 0.833333 kWh 0.000833 MWh 3,000,000 Ws 2,843 BTU 0.002843 MMBTU 0.028435 0.0000000000028435 18,725,000,000,000,000,853,540,864 eV 18,725,000,000,000,000,786,432 keV 18,725,000,000,000,000,000 MeV
4 MJ 4,000,000 J 4,000 kJ 0.004 GJ 956,023 cal 956.022945 kcal 0.956023 Mcal 1,111 Wh 1.111111 kWh 0.001111 MWh 4,000,000 Ws 3,791 BTU 0.003791 MMBTU 0.037913 0.0000000000037913 24,965,999,999,999,999,333,105,664 eV 24,965,999,999,999,998,427,136 keV 24,966,000,000,000,000,000 MeV
5 MJ 5,000,000 J 5,000 kJ 0.005 GJ 1,195,029 cal 1,195 kcal 1.195029 Mcal 1,389 Wh 1.388889 kWh 0.001389 MWh 5,000,000 Ws 4,739 BTU 0.004739 MMBTU 0.047391 0.0000000000047391 31,207,999,999,999,998,372,610,048 eV 31,207,999,999,999,997,902,848 keV 31,208,000,000,000,000,000 MeV
6 MJ 6,000,000 J 6,000 kJ 0.006 GJ 1,434,034 cal 1,434 kcal 1.434034 Mcal 1,667 Wh 1.666667 kWh 0.001667 MWh 6,000,000 Ws 5,687 BTU 0.005687 MMBTU 0.056869 0.0000000000056869 37,449,000,000,000,001,147,142,144 eV 37,448,999,999,999,999,737,856 keV 37,449,000,000,000,000,000 MeV
7 MJ 7,000,000 J 7,000 kJ 0.007 GJ 1,673,040 cal 1,673 kcal 1.67304 Mcal 1,944 Wh 1.944444 kWh 0.001944 MWh 7,000,000 Ws 6,635 BTU 0.006635 MMBTU 0.066347 0.0000000000066347 43,691,000,000,000,000,186,646,528 eV 43,691,000,000,000,003,407,872 keV 43,691,000,000,000,000,000 MeV
8 MJ 8,000,000 J 8,000 kJ 0.008 GJ 1,912,046 cal 1,912 kcal 1.912046 Mcal 2,222 Wh 2.222222 kWh 0.002222 MWh 8,000,000 Ws 7,583 BTU 0.007583 MMBTU 0.075825 0.0000000000075825 49,931,999,999,999,998,666,211,328 eV 49,931,999,999,999,996,854,272 keV 49,932,000,000,000,000,000 MeV
9 MJ 9,000,000 J 9,000 kJ 0.009 GJ 2,151,052 cal 2,151 kcal 2.151052 Mcal 2,500 Wh 2.5 kWh 0.0025 MWh 9,000,000 Ws 8,530 BTU 0.00853 MMBTU 0.085304 0.0000000000085304 56,173,999,999,999,997,705,715,712 eV 56,174,000,000,000,000,524,288 keV 56,174,000,000,000,000,000 MeV
10 MJ 10,000,000 J 10,000 kJ 0.01 GJ 2,390,057 cal 2,390 kcal 2.390057 Mcal 2,778 Wh 2.777778 kWh 0.002778 MWh 10,000,000 Ws 9,478 BTU 0.009478 MMBTU 0.094782 0.0000000000094782 62,414,999,999,999,996,185,280,512 eV 62,415,000,000,000,002,359,296 keV 62,415,000,000,000,000,000 MeV
11 MJ 11,000,000 J 11,000 kJ 0.011 GJ 2,629,063 cal 2,629 kcal 2.629063 Mcal 3,056 Wh 3.055556 kWh 0.003056 MWh 11,000,000 Ws 10,426 BTU 0.010426 MMBTU 0.10426 0.000000000010426 68,657,000,000,000,003,814,719,488 eV 68,656,999,999,999,997,640,704 keV 68,657,000,000,000,000,000 MeV
12 MJ 12,000,000 J 12,000 kJ 0.012 GJ 2,868,069 cal 2,868 kcal 2.868069 Mcal 3,333 Wh 3.333333 kWh 0.003333 MWh 12,000,000 Ws 11,374 BTU 0.011374 MMBTU 0.113738 0.000000000011374 74,898,000,000,000,002,294,284,288 eV 74,897,999,999,999,999,475,712 keV 74,898,000,000,000,000,000 MeV
13 MJ 13,000,000 J 13,000 kJ 0.013 GJ 3,107,075 cal 3,107 kcal 3.107075 Mcal 3,611 Wh 3.611111 kWh 0.003611 MWh 13,000,000 Ws 12,322 BTU 0.012322 MMBTU 0.123216 0.000000000012322 81,139,999,999,999,992,743,854,080 eV 81,139,999,999,999,994,757,120 keV 81,140,000,000,000,000,000 MeV
14 MJ 14,000,000 J 14,000 kJ 0.014 GJ 3,346,080 cal 3,346 kcal 3.34608 Mcal 3,889 Wh 3.888889 kWh 0.003889 MWh 14,000,000 Ws 13,269 BTU 0.013269 MMBTU 0.132694 0.000000000013269 87,381,000,000,000,008,403,288,064 eV 87,380,999,999,999,996,592,128 keV 87,381,000,000,000,000,000 MeV
15 MJ 15,000,000 J 15,000 kJ 0.015 GJ 3,585,086 cal 3,585 kcal 3.585086 Mcal 4,167 Wh 4.166667 kWh 0.004167 MWh 15,000,000 Ws 14,217 BTU 0.014217 MMBTU 0.142173 0.000000000014217 93,622,999,999,999,998,852,857,856 eV 93,622,999,999,999,991,873,536 keV 93,623,000,000,000,000,000 MeV
16 MJ 16,000,000 J 16,000 kJ 0.016 GJ 3,824,092 cal 3,824 kcal 3.824092 Mcal 4,444 Wh 4.444444 kWh 0.004444 MWh 16,000,000 Ws 15,165 BTU 0.015165 MMBTU 0.151651 0.000000000015165 99,863,999,999,999,997,332,422,656 eV 99,863,999,999,999,993,708,544 keV 99,864,000,000,000,000,000 MeV
17 MJ 17,000,000 J 17,000 kJ 0.017 GJ 4,063,098 cal 4,063 kcal 4.063098 Mcal 4,722 Wh 4.722222 kWh 0.004722 MWh 17,000,000 Ws 16,113 BTU 0.016113 MMBTU 0.161129 0.000000000016113 106,110,000,000,000,007,201,619,968 eV 106,109,999,999,999,996,329,984 keV 106,110,000,000,000,000,000 MeV
18 MJ 18,000,000 J 18,000 kJ 0.018 GJ 4,302,103 cal 4,302 kcal 4.302103 Mcal 5,000 Wh 5 kWh 0.005 MWh 18,000,000 Ws 17,061 BTU 0.017061 MMBTU 0.170607 0.000000000017061 112,349,999,999,999,996,531,310,592 eV 112,350,000,000,000,004,718,592 keV 112,350,000,000,000,000,000 MeV
19 MJ 19,000,000 J 19,000 kJ 0.019 GJ 4,541,109 cal 4,541 kcal 4.541109 Mcal 5,278 Wh 5.277778 kWh 0.005278 MWh 19,000,000 Ws 18,009 BTU 0.018009 MMBTU 0.180085 0.000000000018009 118,590,000,000,000,003,040,870,400 eV 118,589,999,999,999,996,329,984 keV 118,590,000,000,000,000,000 MeV
20 MJ 20,000,000 J 20,000 kJ 0.02 GJ 4,780,115 cal 4,780 kcal 4.780115 Mcal 5,556 Wh 5.555556 kWh 0.005556 MWh 20,000,000 Ws 18,956 BTU 0.018956 MMBTU 0.189563 0.000000000018956 124,829,999,999,999,992,370,561,024 eV 124,830,000,000,000,004,718,592 keV 124,830,000,000,000,000,000 MeV

## Megajoule Conversion Calculators

You can also convert energy using one of our megajoule converters below.

Joules
Calories
Watts x Time
Thermal Units
Electronvolts

You might also find our other electrical calculators useful.

## References

1. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion

Joules
Calories
Watts x Time
Thermal Units
Electronvolts