100 kcal to kj

Updated July 2026

100 kcal equals 418.4 kJ

100 kilocalories = 418.4 kJ. That is how many kilojoules there are in 100 kilocalories. Enter any value in the free energy converter to convert kilocalories to kilojoules (and every other unit) instantly — it runs privately in your browser.

Formula: Multiply by 4.184 — 1 kilocalorie = 4.184 kilojoules. So 100 × 4.184 = 418.4 kJ.

kcal to kj conversion table

kilocalorie (kcal)kilojoules (kJ)
85 kcal355.64 kJ
90 kcal376.56 kJ
95 kcal397.48 kJ
100 kcal418.4 kJ
105 kcal439.32 kJ
110 kcal460.24 kJ
115 kcal481.16 kJ

Frequently asked questions

How many kilojoules is 100 kilocalories?
100 kilocalories is 418.4 kilojoules. Multiply kcal by 4.184 to get kj.
What is 100 kcal to kj?
100 kilocalories = 418.4 kJ.
How do you convert kcal to kj?
Multiply by 4.184 — 1 kilocalorie = 4.184 kilojoules. So 100 × 4.184 = 418.4 kJ.

Other kcal to kj conversions

Convert 100 kcal to other units