Common Converters

Convert Kilocalories to Kilojoules

Use our accurate converter to change kilocalories into kilojoules. This tool is simple to use and works instantly.

How to Calculate

To change kilocalories to kilojoules, you just need to know the conversion factor.

Rule: 1 Kilocalories = 4.1868 Kilojoules

Kilocalories to Kilojoules
Pre-defined calculator for direct kilocalories to kilojoules conversion.
Kilocalories (kcal)
0
Kilojoules (kJ)
Formula: 1 Kilocalories = 4.1868 Kilojoules

Unit Information

About Kilocalories

Definition: A kilocalorie is equal to 1,000 calories.

History: This is what is usually meant by a 'Calorie' on food boxes.

Where it is used: Primary unit for talking about the energy in the food we eat.

Kilocalories to Kilojoules Conversion Table

Kilocalories [kcal]Kilojoules [kj]
0.01 kcal0.041868 kj
0.1 kcal0.41868 kj
1 kcal4.1868 kj
2 kcal8.3736 kj
3 kcal12.5604 kj
5 kcal20.934 kj
10 kcal41.868 kj
20 kcal83.736 kj
50 kcal209.34 kj
100 kcal418.68 kj
1000 kcal4,186.8 kj

How to Convert Kilocalories to Kilojoules

Calculation: To convert kilocalories to kilojoules, multiply the value by the conversion factor (4.1868).

Example: convert 15 kcal to kj:
15 kcal = 15 × 4.1868 kj = 62.802 kj

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