Convert kilocalorie to kilojoule
1 kcal = 4.184 kJ
1 kcal = 4.184 kJ
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 4.184 to go from kilocalorie 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 kilocalorie — 1 kJ = 0.2390057361 kcal.
kilocalorie to kilojoule — common values
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 5 kcal | 20.92 kJ |
| 10 kcal | 41.84 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| 50 kcal | 209.2 kJ |
| 75 kcal | 313.8 kJ |
| 100 kcal | 418.4 kJ |
| 250 kcal | 1,046 kJ |
| 500 kcal | 2,092 kJ |
| 1000 kcal | 4,184 kJ |