Energy
Calories to Joule
Convert calories to joule instantly.
About this conversion
A calorie (cal) is the energy needed to raise 1 g of water by 1°C. 1 cal = 4.184 J. 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. 1 Calories equals 4.184 joule. 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 calories field and instantly see the result in joule. Click the swap button to reverse the conversion.
Manual calculation
1 calories = 4.184 joule. Example: 10 cal = 41.84 J.
Frequently asked questions
How do you convert calories to joule?
Multiply the number of calories by 4.184 to get joule. Example: 10 cal × 4.184 = 41.84 J.
Are calories bigger or smaller than joule?
Calories is larger than Joule. One calorie equals 4.184 joule, so the result is a larger number when converting from calories to joule.
What is 5 calories in joule?
5 cal equals 20.92 J.
How many calories are in 1 joule?
1 J equals 0.23901 cal. This is the reverse conversion — useful if you have a value in joule and want it in calories.
What is calorie?
A calorie (cal) is the energy needed to raise 1 g of water by 1°C. 1 cal = 4.184 J.
What is joule used for?
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.