Kilojoules to Calories Conversion (kJ to cal)

Kilojoules to Calories Converter

Enter the energy in kilojoules below to convert it to calories.

Result in Calories:

1 kJ = 239.005736 cal

How to Convert Kilojoules to Calories

To convert a measurement in kilojoules to a measurement in calories, multiply the energy by the following conversion ratio: 239.005736 calories/kilojoule.

Since one kilojoule is equal to 239.005736 calories, you can use this simple formula to convert:

calories = kilojoules × 239.005736

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

For example, here's how to convert 5 kilojoules to calories using the formula above.

calories = (5 kJ × 239.005736) = 1,195.028681 cal

How Many Calories Are in a Kilojoule?

There are 239.005736 calories in a kilojoule, which is why we use this value in the formula above.

1 kJ = 239.005736 cal

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

What Is a Kilojoule?

One kilojoule is equal to 1,000 joules, which is 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 thousands, or 10³. Kilojoules can be abbreviated as kJ; for example, 1 kilojoule can be written as 1 kJ.

Learn more about kilojoules.

What Is a Calorie?

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.

Learn more about calories.

Kilojoule to Calorie Conversion Table

Table showing various 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

Table showing various 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