Kilocalories to Joules
Convert kcal to J. 1 kilocalorie = 4,184 J, and 1 joule = 0.000239005736 kcal.
Formula Multiply the value in kilocalories by 4,184. Kilocalories to Joules table
1 kilocalorie in every unit
| Joules | 4,184 | J |
|---|---|---|
| Kilojoules | 4.184 | kJ |
| Megajoules | 0.004184 | MJ |
| Calories | 1,000 | cal |
| Watt-hours | 1.16222222222 | Wh |
| Kilowatt-hours | 0.001162222222 | kWh |
| British thermal units | 3.96566683139 | BTU |
| Foot-pounds | 3,085.96003258 | ft·lbf |
| Electronvolts | 2.611447e+22 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert kilocalories to joules
Multiply the value in kilocalories by 4,184.
For example, 10 kcal = 41,840 J, and 10 J = 0.002390057361 kcal.
Frequently asked questions
How many joules are in one kilocalorie?
1 kilocalorie = 4,184 J.
What is 10 kcal in J?
10 kcal = 41,840 J.
How do I convert J back to kcal?
Divide the value in joules by 4,184. 1 joule = 0.000239005736 kcal.
Kilocalories to Joules table
| Kilocalories (kcal) | Joules (J) |
|---|---|
| 0.1 | 418.4 |
| 0.5 | 2,092 |
| 1 | 4,184 |
| 2 | 8,368 |
| 3 | 12,552 |
| 4 | 16,736 |
| 5 | 20,920 |
| 6 | 25,104 |
| 7 | 29,288 |
| 8 | 33,472 |
| 9 | 37,656 |
| 10 | 41,840 |
| 15 | 62,760 |
| 20 | 83,680 |
| 25 | 104,600 |
| 30 | 125,520 |
| 50 | 209,200 |
| 75 | 313,800 |
| 100 | 418,400 |
| 250 | 1,046,000 |
| 500 | 2,092,000 |
| 1,000 | 4,184,000 |
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