Kilocalorie to Kilojoule Converter

1 kcal = 4.184 kJ

1 kcal = 4.184 kJ

Kilocalorie to Kilojoule Table

Kilocalorie (kcal)Kilojoule (kJ)
0.010.04184
0.10.4184
14.184
28.368
520.92
1041.84
2083.68
50209.2
100418.4
5002,092
10004,184

How to Convert Kilocalorie to Kilojoule

To convert Kilocalorie (kcal) to Kilojoule (kJ), use the formula: 1 kcal = 4.184 kJ.

For example, to convert 5 kcal to kJ: 5 kcal = 20.92 kJ. Similarly, 10 kcal = 41.84 kJ, 25 kcal = 104.6 kJ, and 100 kcal = 418.4 kJ.

To convert in the other direction, 1 kJ = 0.239006 kcal. Simply enter your value in either field above for instant bi-directional conversion.

What is a Kilocalorie?

A kilocalorie (kcal) equals 1,000 calories — commonly called a "Calorie" on food labels. Kilocalories are the standard unit for food energy in the US.

What is a Kilojoule?

A kilojoule (kJ) equals 1,000 joules. Kilojoules are used on food labels in Australia, Europe, and many other countries.

Common Kilocalorie to Kilojoule Conversions

Here are some frequently looked-up conversions between Kilocalorie and Kilojoule:

  • 1 kcal = 4.184 kJ
  • 5 kcal = 20.92 kJ
  • 10 kcal = 41.84 kJ
  • 25 kcal = 104.6 kJ
  • 100 kcal = 418.4 kJ

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