Kilocalories to Joules Converter
How to convert kilocalories to joules
joules = kilocalories × 4,184
To convert kilocalories to joules, multiply the number of kilocalories by 4,184.
1 kcal = 4,184 J
Examples
- A common daily reference intake: 2,000 kcal × 4,184 = 8,368,000 J
- 500 kcal × 4,184 = 2,092,000 J
Good to know
The kilocalorie is the food "Calorie" (capital C) shown on nutrition labels. It is based here on the thermochemical calorie, so 1 kcal is exactly 4.184 kJ.
Kilocalories to joules conversion table
| Kilocalories (kcal) | Joules (J) |
|---|---|
| 1 kcal | 4,184 J |
| 10 kcal | 41,840 J |
| 50 kcal | 209,200 J |
| 100 kcal | 418,400 J |
| 150 kcal | 627,600 J |
| 200 kcal | 836,800 J |
| 250 kcal | 1,046,000 J |
| 300 kcal | 1,255,200 J |
| 400 kcal | 1,673,600 J |
| 500 kcal | 2,092,000 J |
| 1,000 kcal | 4,184,000 J |
| 1,500 kcal | 6,276,000 J |
| 2,000 kcal | 8,368,000 J |
| 2,500 kcal | 10,460,000 J |
| 3,000 kcal | 12,552,000 J |
Unit definitions
- Kilocalorie (kcal)
- A kilocalorie is 1000 calories, exactly 4184 joules using the thermochemical calorie. It is the unit of food energy on nutrition labels.
- Joule (J)
- The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter, or one watt for one second.