Kilojoules to Calories Conversion

Enter the energy in kilojoules below to get the value converted to calories.

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1 kJ = 239.005736 cal

How to Convert Kilojoules to Calories

To convert a kilojoule measurement to a calorie measurement, multiply the energy by the conversion ratio. One kilojoule is equal to 239.005736 calories, so use this simple formula to convert:

calories = kilojoules × 239.005736

The energy in calories is equal to the kilojoules multiplied by 239.005736.

For example, here's how to convert 5 kilojoules to calories using the formula above.
5 kJ = (5 × 239.005736) = 1,195.028681 cal

Kilojoules and calories are both units used to measure energy. Keep reading to learn more about each unit of measure.

Kilojoules

One kilojoule is equal to 1,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for 103. Kilojoules can be abbreviated as kJ, for example 1 kilojoule can be written as 1 kJ.

Calories

One calorie is equal to the heat needed to raise the temperature of one gram of water from 14.5 to 15.5 degrees Celsius.

When measuring the energy content in foods, the large calorie, or kilocalorie is used, but it's often still just called a "calorie." When both the calorie and large calorie are used in the same context it is common to refer to the calorie as a "small calorie."

Calories can be abbreviated as cal, for example 1 calorie can be written as 1 cal.

Kilojoule to Calorie Conversion Table

Kilojoule measurements converted to calories
Kilojoules Calories
1 kJ 239.01 cal
2 kJ 478.01 cal
3 kJ 717.02 cal
4 kJ 956.02 cal
5 kJ 1,195 cal
6 kJ 1,434 cal
7 kJ 1,673 cal
8 kJ 1,912 cal
9 kJ 2,151 cal
10 kJ 2,390 cal
11 kJ 2,629 cal
12 kJ 2,868 cal
13 kJ 3,107 cal
14 kJ 3,346 cal
15 kJ 3,585 cal
16 kJ 3,824 cal
17 kJ 4,063 cal
18 kJ 4,302 cal
19 kJ 4,541 cal
20 kJ 4,780 cal
21 kJ 5,019 cal
22 kJ 5,258 cal
23 kJ 5,497 cal
24 kJ 5,736 cal
25 kJ 5,975 cal
26 kJ 6,214 cal
27 kJ 6,453 cal
28 kJ 6,692 cal
29 kJ 6,931 cal
30 kJ 7,170 cal
31 kJ 7,409 cal
32 kJ 7,648 cal
33 kJ 7,887 cal
34 kJ 8,126 cal
35 kJ 8,365 cal
36 kJ 8,604 cal
37 kJ 8,843 cal
38 kJ 9,082 cal
39 kJ 9,321 cal
40 kJ 9,560 cal