Convert joule to kilocalorie
1 J = 0.0002390057361 kcal
1 J = 0.000239 kcal
1 J in every energy unit
| joule | 1 J |
| kilojoule | 0.001 kJ |
| megajoule | 0.000001 MJ |
| calorie | 0.239 cal |
| kilocalorie | 0.000239 kcal |
| watt-hour | 0.000278 Wh |
| kilowatt-hour | 2.78e-07 kWh |
| British thermal unit | 0.000948 BTU |
| foot-pound | 0.738 ft⋅lb |
| electron volt | 6.24e+18 eV |
| kiloelectron volt | 6.24e+15 keV |
| megaelectron volt | 6,240,000,000,000 MeV |
How the conversion works
Multiply by 0.0002390057361 to go from joule to kilocalorie, 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? kilocalorie to joule — 1 kcal = 4,184 J.
joule to kilocalorie — common values
| 1 J | 0.00023900574 kcal |
| 2 J | 0.00047801147 kcal |
| 3 J | 0.00071701721 kcal |
| 5 J | 0.0011950287 kcal |
| 10 J | 0.0023900574 kcal |
| 15 J | 0.003585086 kcal |
| 20 J | 0.0047801147 kcal |
| 25 J | 0.0059751434 kcal |
| 50 J | 0.011950287 kcal |
| 75 J | 0.01792543 kcal |
| 100 J | 0.023900574 kcal |
| 250 J | 0.059751434 kcal |
| 500 J | 0.11950287 kcal |
| 1000 J | 0.23900574 kcal |