Kilocalorie to Kilojoule Calculator
Calories (cal & kcal) to Kilojoule (KJ) Conversion
There are two common types of calorie conversions, use this formula
Conversion Formulas
The relationships between calories and kilojoules can be expressed as:
KJ = cal × 0.004184 KJ = kcal × 4.184Where:
- cal = Small calories
- kcal = Large calories (food calories)
- KJ = Kilojoules
Example Calculation
If you have an energy output of 100 cal and 100 kcal, the calculations would be:
KJ = 100 cal × 0.004184 ≈ 0.4184 KJ KJ = 100 kcal × 4.184 ≈ 418.4 KJWhat is a Small Calorie (cal)?
A small calorie (cal) is the energy needed to increase 1 gram of water by 1°C at a pressure of 1 atmosphere.
What is a Large Calorie (kcal)?
A large calorie (kcal) is the energy needed to increase 1 kg of water by 1°C at a pressure of 1 atmosphere. It is also known as a food calorie.
What is a Kilojoule (KJ)?
A kilocalorie (kcal) is a unit of energy equivalent to 1,000 calories. It is widely used to quantify the energy content in food and beverages.
Calories (cal) to Kilojoules (kJ) Conversion Table
Formula: kJ = cal × 0.004184
| Calories [cal] | Kilojoules [kJ] |
|---|---|
| 1 cal | 0.00418 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 50 cal | 0.20920 kJ |
| 100 cal | 0.41840 kJ |
