Convert kilocalorie to kilojoule
1 kcal = 4.184 kJ
1 kcal = 4.18 kJ
1 kcal in every energy unit
| joule | 4,180 J |
| kilojoule | 4.18 kJ |
| megajoule | 0.00418 MJ |
| calorie | 1,000 cal |
| kilocalorie | 1 kcal |
| watt-hour | 1.16 Wh |
| kilowatt-hour | 0.00116 kWh |
| British thermal unit | 3.97 BTU |
| foot-pound | 3,090 ft⋅lb |
| electron volt | 2.61e+22 eV |
| kiloelectron volt | 2.61e+19 keV |
| megaelectron volt | 2.61e+16 MeV |
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 |