Convert Kilocalorie (kcal) to Kilojoule (kJ)

1 kcal = 4.184 kJ

Unit conversion from Kilocalorie to Kilojoule. Use the reference table and formula below to convert Kilocalorie ⇄ Kilojoule at a glance.

Formula: 1 kcal = 4.184 kJ

Reference table

KilocalorieKilojoule
1 kcal4.184 kJ
2 kcal8.368 kJ
3 kcal12.552 kJ
5 kcal20.92 kJ
10 kcal41.84 kJ
20 kcal83.68 kJ
50 kcal209.2 kJ
100 kcal418.4 kJ

About this conversion

Energy conversions help with calories, nutrition, electricity and exercise.

Frequently asked questions

How do I convert kcal to kJ?

Use the formula "1 kcal = 4.184 kJ". For example, 10 kcal = 41.84 kJ.

How many kcal are in 1 kJ?

1 kJ = 0.239006 kcal (the reverse Kilojoule → Kilocalorie conversion).

How are kcal and kJ related?

1 kcal is about 4.184 kJ. Nutrition labels use kcal in some countries and kJ in others.

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