Formula.kilojoules = kilocalories × 4.184.
Relationship.1 kcal = 4.184 kJ.
Worked example. 500 kcal = 2,092 kJ.
kcal to kJ Converter.
1 kcal = 4.184 kJ, so 500 kcal = 2,092 kJ. Type any value below to convert kcal to kJ instantly.
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| J | kJ | cal | kcal | Wh | kWh | BTU | eV |
|---|---|---|---|---|---|---|---|
| 2092 | 2.092 | 500 | 0.5 | 0.5811111111 | 0.0005811111 | 1.982826 | 1.305868e+22 |
| 20920 | 20.92 | 5000 | 5 | 5.811111 | 0.0058111111 | 19.828256 | 1.305868e+23 |
| 209200 | 209.2 | 50000 | 50 | 58.111111 | 0.0581111111 | 198.282562 | 1.305868e+24 |
| 2092000 | 2092 | 500000 | 500 | 581.111111 | 0.5811111111 | 1982.8256 | 1.305868e+25 |
| 20920000 | 20920 | 5000000 | 5000 | 5811.1111 | 5.811111 | 19828.2562 | 1.305868e+26 |
| 209200000 | 209200 | 50000000 | 50000 | 58111.1111 | 58.111111 | 198282.5621 | 1.305868e+27 |
| 2092000000 | 2092000 | 500000000 | 500000 | 581111.1111 | 581.111111 | 1982825.6213 | 1.305868e+28 |
How to convert kcal to kJ
kcal to kJ conversion table
| kcal | kJ |
|---|---|
| 10 | 41.84 |
| 20 | 83.68 |
| 50 | 209.2 |
| 100 | 418.4 |
| 150 | 627.6 |
| 200 | 836.8 |
| 250 | 1046 |
| 300 | 1255.2 |
| 400 | 1673.6 |
| 500 | 2092 |
| 600 | 2510.4 |
| 700 | 2928.8 |
| 800 | 3347.2 |
| 900 | 3765.6 |
| 1000 | 4184 |
| 1200 | 5020.8 |
| 1500 | 6276 |
| 1800 | 7531.2 |
| 2000 | 8368 |
| 2500 | 10460 |
| 3000 | 12552 |
| 3500 | 14644 |
| 4000 | 16736 |
| 5000 | 20920 |
| 10000 | 41840 |
Frequently Asked Questions
How do I convert kilocalories to kilojoules?
Multiply kilocalories by 4.184. For example, 500 kcal × 4.184 = 2092 kJ.
How many kJ is 2000 kcal?
2000 kcal equals 8368 kJ, roughly the daily energy intake guideline for many adults.
Are food Calories the same as kcal?
Yes — one food Calorie equals one kilocalorie, so 250 kcal is 250 Calories and 1046 kJ.
Why is the factor 4.184?
One calorie is defined as 4.184 joules (the energy to raise 1 g of water by 1 °C), so 1 kcal = 4.184 kJ.