Energy
Joule to Calories
Convert joule to calories instantly.
About this conversion
Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule. A calorie (cal) is the energy needed to raise 1 g of water by 1°C. 1 cal = 4.184 J. 4.184 joule equal 1 Calories. The converter above calculates the result instantly — you can also swap the units to convert in the other direction.
How to use
Enter a value in the joule field and instantly see the result in calories. Click the swap button to reverse the conversion.
Manual calculation
1 joule = 0.23901 calories. Example: 10 J = 2.3901 cal.
Frequently asked questions
How do you convert joule to calories?
Divide the number of joule by 4.184 to get calories. Example: 50 J ÷ 4.184 = 11.95 cal.
Are joule bigger or smaller than calories?
Joule is smaller than Calories. There are 4.184 joule in one calorie, so the result is a smaller number when converting from joule to calories.
What is 10 joule in calories?
10 J equals 2.3901 cal.
How many joule are in 1 calorie?
1 cal equals 4.184 J. This is the reverse conversion — useful if you have a value in calories and want it in joule.
What is joule?
Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule.
What is calorie used for?
A calorie (cal) is the energy needed to raise 1 g of water by 1°C. 1 cal = 4.184 J.