Convert Joule to Kilocalorie

One J equals 0.0002390057361 kcal. This converter allows you to easily convert between Joule and Kilocalorie in real time.

Formula

J × 0.0002390057361 = kcal

Example: 1 J = 0.0002390057361 kcal

What is Joule?

The joule is the SI unit of energy, named after English physicist James Prescott Joule. One joule equals the work done by a force of one newton moving an object one meter, or the energy used by one watt of power for one second. Food energy labels in many countries show kilojoules alongside calories. In physics, the joule unifies mechanical, thermal, and electrical energy into a single consistent unit.

What is Kilocalorie?

The kilocalorie equals 1,000 thermochemical calories and is the standard unit for food energy labeling in Japan, the United States, and many other countries. It is often written as "Cal" (with a capital C) or simply called a "Calorie" on food packages. A bowl of rice (150 grams) contains about 235 kcal, a slice of bread about 160 kcal, and 30 minutes of walking burns roughly 100 kcal.