Joules to Kilocalories
Convert J to kcal. 1 joule = 0.000239005736 kcal, and 1 kilocalorie = 4,184 J.
Formula Divide the value in joules by 4,184. Joules to Kilocalories table
1 joule in every unit
| Kilojoules | 0.001 | kJ |
|---|---|---|
| Megajoules | 0.000001 | MJ |
| Calories | 0.239005736138 | cal |
| Kilocalories | 0.000239005736 | kcal |
| Watt-hours | 0.000277777778 | Wh |
| Kilowatt-hours | 0.000000277778 | kWh |
| British thermal units | 0.00094781712 | BTU |
| Foot-pounds | 0.737562149277 | ft·lbf |
| Electronvolts | 6.241509e+18 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert joules to kilocalories
Divide the value in joules by 4,184.
For example, 10 J = 0.002390057361 kcal, and 10 kcal = 41,840 J.
Frequently asked questions
How many kilocalories are in one joule?
1 joule = 0.000239005736 kcal.
What is 10 J in kcal?
10 J = 0.002390057361 kcal.
How do I convert kcal back to J?
Multiply the value in kilocalories by 4,184. 1 kilocalorie = 4,184 J.
Joules to Kilocalories table
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 0.1 | 0.000023900574 |
| 0.5 | 0.000119502868 |
| 1 | 0.000239005736 |
| 2 | 0.000478011472 |
| 3 | 0.000717017208 |
| 4 | 0.000956022945 |
| 5 | 0.001195028681 |
| 6 | 0.001434034417 |
| 7 | 0.001673040153 |
| 8 | 0.001912045889 |
| 9 | 0.002151051625 |
| 10 | 0.002390057361 |
| 15 | 0.003585086042 |
| 20 | 0.004780114723 |
| 25 | 0.005975143403 |
| 30 | 0.007170172084 |
| 50 | 0.011950286807 |
| 75 | 0.01792543021 |
| 100 | 0.023900573614 |
| 250 | 0.059751434034 |
| 500 | 0.119502868069 |
| 1,000 | 0.239005736138 |
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