Joules to Calories Converter
Convert joules (J) to calories (cal)
Result
0.2390057361 cal
Calories
1 J = 0.2390057361 cal
1 J in other units
- 1Enter a valueType the number to convert
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- 3Read the resultSee it in every other unit too
How to convert joules to calories
One joule equals 0.2390057 calories, so multiply the number of joules by 0.2390057.
cal = J × 0.2390057
1 J = 0.2390057 cal · 1 cal = 4.184 J
Worked example
To convert 5 joules to calories: 5 J × 0.2390057 = 1.195029 cal.
About joules (J)
The joule is the SI unit of energy: the work done by a force of one newton over one metre.
About calories (cal)
A (small) calorie is 4.184 J, the energy to warm 1 g of water by 1 °C. Food “Calories” are actually kilocalories.
More conversions
Joules to other units
Frequently asked questions
How many calories are in one joule?
One joule equals 0.2390057 calories.
How many joules are in one calorie?
One calorie equals 4.184 joules.
How do I convert joules to calories?
Use the formula cal = J × 0.2390057. For example, 5 J × 0.2390057 = 1.195029 cal.