Calories to Kilojoules Converter
Convert calories (cal) to kilojoules (kJ) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Kilojoules
- 0.004184 kJ
How to use the calories to kilojoules converter
- Enter the calories (cal).
- The results update as you type, or press Calculate.
- Read the kilojoules first, then the supporting figures below it.
Formula
Kilojoules = calories × 0.004184
Worked example
For example, with these inputs:
- Calories (cal): 1
the calculator returns:
- Kilojoules: 0.004184 kJ
Calories to Kilojoules table
| Calories | Kilojoules |
|---|---|
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 25 cal | 0.1046 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
| 250 cal | 1.046 kJ |
| 500 cal | 2.092 kJ |
| 1,000 cal | 4.184 kJ |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Frequently asked questions
How many kilojoules are in one calorie?
1 cal = 0.004184 kJ.
How do I convert cal to kJ?
Kilojoules = calories × 0.004184.