Convert kilocalorie to megajoule
1 kcal = 0.004184 MJ
1 kcal = 0.004184 MJ
1 kcal in every energy unit
| electron volt | 2.6114e+22 eV |
| hartree | 9.5969e+20 Eh |
| kiloelectron volt | 2.6114e+19 keV |
| megaelectron volt | 2.6114e+16 MeV |
| gigaelectron volt | 26,114,000,000,000 GeV |
| nanojoule | 4,184,000,000,000 nJ |
| erg | 41,840,000,000 erg |
| teraelectron volt | 26,114,000,000 TeV |
| microjoule | 4,184,000,000 µJ |
| millijoule | 4,184,000 mJ |
| inch-pound | 37,032 in·lb |
| joule | 4,184 J |
| foot-pound | 3,086 ft⋅lb |
| calorie | 1,000 cal |
| calorie (International Table) | 999.33 cal IT |
| kilojoule | 4.184 kJ |
| BTU (thermochemical) | 3.9683 BTU th |
| British thermal unit | 3.9657 BTU |
| watt-hour | 1.1622 Wh |
| kilocalorie | 1 kcal |
| megajoule | 0.004184 MJ |
| horsepower-hour | 0.0015586 hp·h |
| kilowatt-hour | 0.0011622 kWh |
| therm | 0.000039657 therm |
| gigajoule | 0.000004184 GJ |
| million BTU | 0.0000039657 MMBTU |
| megawatt-hour | 0.0000011622 MWh |
| ton of TNT | 0.000001 t TNT |
| tonne of oil equivalent | 9.9933e-08 toe |
| terajoule | 4.1840e-09 TJ |
| gigawatt-hour | 1.1622e-09 GWh |
| kiloton of TNT | 1.0000e-09 kt TNT |
| petajoule | 4.1840e-12 PJ |
| terawatt-hour | 1.1622e-12 TWh |
| megaton of TNT | 1.0000e-12 Mt TNT |
| quad | 3.9657e-15 quad |
How the conversion works
Multiply by 0.004184 to go from kilocalorie to megajoule, 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? megajoule to kilocalorie — 1 MJ = 239.0057361 kcal.
kilocalorie to megajoule — common values
| 1 kcal | 0.004184 MJ |
| 2 kcal | 0.008368 MJ |
| 3 kcal | 0.012552 MJ |
| 5 kcal | 0.02092 MJ |
| 10 kcal | 0.04184 MJ |
| 15 kcal | 0.06276 MJ |
| 20 kcal | 0.08368 MJ |
| 25 kcal | 0.1046 MJ |
| 50 kcal | 0.2092 MJ |
| 75 kcal | 0.3138 MJ |
| 100 kcal | 0.4184 MJ |
| 250 kcal | 1.046 MJ |
| 500 kcal | 2.092 MJ |
| 1000 kcal | 4.184 MJ |