Convert megajoule to kilojoule
1 MJ = 1,000 kJ
1 MJ = 1,000 kJ
1 MJ in every energy unit
| electron volt | 6.2415e+24 eV |
| hartree | 2.2937e+23 Eh |
| kiloelectron volt | 6.2415e+21 keV |
| megaelectron volt | 6.2415e+18 MeV |
| gigaelectron volt | 6.2415e+15 GeV |
| nanojoule | 1.0000e+15 nJ |
| erg | 10,000,000,000,000 erg |
| teraelectron volt | 6,241,500,000,000 TeV |
| microjoule | 1,000,000,000,000 µJ |
| millijoule | 1,000,000,000 mJ |
| inch-pound | 8,850,700 in·lb |
| joule | 1,000,000 J |
| foot-pound | 737,560 ft⋅lb |
| calorie | 239,010 cal |
| calorie (International Table) | 238,850 cal IT |
| kilojoule | 1,000 kJ |
| BTU (thermochemical) | 948.45 BTU th |
| British thermal unit | 947.82 BTU |
| watt-hour | 277.78 Wh |
| kilocalorie | 239.01 kcal |
| megajoule | 1 MJ |
| horsepower-hour | 0.37251 hp·h |
| kilowatt-hour | 0.27778 kWh |
| therm | 0.0094782 therm |
| gigajoule | 0.001 GJ |
| million BTU | 0.00094782 MMBTU |
| megawatt-hour | 0.00027778 MWh |
| ton of TNT | 0.00023901 t TNT |
| tonne of oil equivalent | 0.000023885 toe |
| terajoule | 0.000001 TJ |
| gigawatt-hour | 2.7778e-07 GWh |
| kiloton of TNT | 2.3901e-07 kt TNT |
| petajoule | 1.0000e-09 PJ |
| terawatt-hour | 2.7778e-10 TWh |
| megaton of TNT | 2.3901e-10 Mt TNT |
| quad | 9.4782e-13 quad |
How the conversion works
Multiply by 1,000 to go from megajoule to kilojoule, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? kilojoule to megajoule — 1 kJ = 0.001 MJ.
megajoule to kilojoule — common values
| 1 MJ | 1,000 kJ |
| 2 MJ | 2,000 kJ |
| 3 MJ | 3,000 kJ |
| 5 MJ | 5,000 kJ |
| 10 MJ | 10,000 kJ |
| 15 MJ | 15,000 kJ |
| 20 MJ | 20,000 kJ |
| 25 MJ | 25,000 kJ |
| 50 MJ | 50,000 kJ |
| 75 MJ | 75,000 kJ |
| 100 MJ | 100,000 kJ |
| 250 MJ | 250,000 kJ |
| 500 MJ | 500,000 kJ |
| 1000 MJ | 1,000,000 kJ |