How many joules is 20 calories?

20 calories is equal to 83.68 joules. To convert, multiply the calorie value by 4.184.

What is the formula to convert calories to joules?

Multiply the calorie value by 4.184. For example, 20 calories = 83.68 joules.

20 cal = 83.68 J

20 calories is equal to 83.68 joules. This conversion uses the standard energy conversion factor between calories and joules.

Multiply the calorie value by 4.184

20 cal = 83.68 J

One thermochemical calorie equals exactly 4.184 joules.
The calorie was originally defined as the energy needed to raise 1 gram of water by 1°C.

Need a different value? Use our full calories to joules converter →