How many joules is 1 calorie?

1 calorie is equal to 4.184 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, 1 calorie = 4.184 joules.

1 cal = 4.184 J

1 calorie is equal to 4.184 joules. This conversion uses the standard energy conversion factor between calories and joules.

Multiply the calorie value by 4.184

1 cal = 4.184 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 →