calories in a joule
How many calories in a joule ? Joules to calories (J to cal) conversion table shows the most common values for the quick reference. Alternatively, you may use the converter below to convert any other values. 1 Joule = 0.239005736 Calories. Joule is metric system unit (electrical, mechanical or thermal) and defined as the amount of work done by a force of one newton to move an object one meter or a current of one ampere when passing through one ohm resistance for one second. It is named after James Prescott Joule in 19th century.