Nutrition & Food
Basic

Kilocalories to Kilojoules

Convert dietary Calories to the SI energy unit used on many food labels.

Formula

kJ=kcal×4.184kJ = kcal \times 4.184

Variables

kcalEnergy in kilocalories

Example

100 kcal ⇒ 418.4 kJ

Did You Know?

One "Calorie" on a food label is actually a kilocalorie — 1000 of the calories physicists use.

energykilojouleconversion