Joules to Kilocalories Converter
Convert joules (J) to kilocalories (kcal) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Kilocalories
- 0.000239 kcal
How to use the joules to kilocalories converter
- Enter the joules (J).
- The results update as you type, or press Calculate.
- Read the kilocalories first, then the supporting figures below it.
Formula
Kilocalories = joules × 0.0002390057
Worked example
For example, with these inputs:
- Joules (J): 1
the calculator returns:
- Kilocalories: 0.000239 kcal
Joules to Kilocalories table
| Joules | Kilocalories |
|---|---|
| 1 J | 0.000239 kcal |
| 2 J | 0.000478 kcal |
| 5 J | 0.001195 kcal |
| 10 J | 0.00239 kcal |
| 20 J | 0.00478 kcal |
| 25 J | 0.005975 kcal |
| 50 J | 0.01195 kcal |
| 100 J | 0.023901 kcal |
| 250 J | 0.059751 kcal |
| 500 J | 0.119503 kcal |
| 1,000 J | 0.239006 kcal |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Frequently asked questions
How many kilocalories are in one joule?
1 J = 0.000239 kcal.
How do I convert J to kcal?
Kilocalories = joules × 0.0002390057.