Joules to Calories

Type a value — result updates instantly.

j
cal
1 j = — cal

Quick reference

Joules (j)Calories (cal)

Formula

Calories = joules × 0.23900574

Multiply the joules value by 0.2390057361376673 to get calories. To reverse — divide calories by 0.2390057361376673 to get joules.

About this conversion

The joule (J) is the SI unit of energy, equal to the work done by a force of one newton over one meter. Learn more →

The calorie (cal) is the energy needed to raise 1 gram of water by 1°C, equal to approximately 4.184 joules. Learn more →

Source: NIST International Reference