UnitSnapKilocalories to Joules
1 kcal = 4,184 J
How to convert kilocalories to joules
J = kcal × 4,184
Example: 5 kcal = 20,920 J
Kilocalories to Joules conversion table
| Kilocalories (kcal) | Joules (J) |
|---|---|
| 1 kcal | 4,184 J |
| 2 kcal | 8,368 J |
| 3 kcal | 12,552 J |
| 4 kcal | 16,736 J |
| 5 kcal | 20,920 J |
| 6 kcal | 25,104 J |
| 7 kcal | 29,288 J |
| 8 kcal | 33,472 J |
| 9 kcal | 37,656 J |
| 10 kcal | 41,840 J |
| 15 kcal | 62,760 J |
| 20 kcal | 83,680 J |
| 25 kcal | 104,600 J |
| 30 kcal | 125,520 J |
| 40 kcal | 167,360 J |
| 50 kcal | 209,200 J |
| 75 kcal | 313,800 J |
| 100 kcal | 418,400 J |
| 250 kcal | 1,046,000 J |
| 500 kcal | 2,092,000 J |
| 1,000 kcal | 4,184,000 J |
About the units
Kilocalories: The kilocalorie, written "Calorie" on food labels, is the energy needed to heat 1 kg of water by 1 °C. This converter uses the thermochemical value of 4,184 joules.
Joules: The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter.
Convert offline on your phone. 36 categories, live currency rates, calculators and history in our free Unit Converter app.
Frequently asked questions
How many joules are in 1 kilocalorie?
1 kilocalorie equals 4,184 joules.
How many kilocalories are in 1 joule?
1 joule equals 0.0002390057 kilocalories.
How do I convert kilocalories to joules?
Use the formula J = kcal × 4,184.
What is 10 kilocalories in joules?
10 kilocalories equals 41,840 joules.
Related conversions
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated