84 kilojoules equals 20.1 kcal.

Kilojoules, joules, and calories, kilocalories, and kcal are all units of heat. Internationally, the sports and nutrition community generally calculates food and exercise energy through calories. Domestic food nutrition tables generally use kilojoules as the calorie unit. If you need to convert to kilocalories (kilocalories), you can use the above calculator to convert.

Because the unit of calories is too small, kilocalories or kcal are generally used. Kilocalorie or kcal is also often called "calorie" or "calorie". This confusion with small calories needs to be distinguished based on common sense.