Kilojoules to Calories Converter

1 kilojoule (kJ) equals 239.005736138 calories (cal).

Quick answer

  • 1 kilojoule = 239.0057361 calories
  • 1 calorie = 0.004184 kilojoules
  • Formula: cal = kJ × 239.005736138

1 kilojoule = 239.0057361 calories

How to convert kilojoules to calories

cal = kJ × 239.005736138

To convert kilojoules to calories, multiply the number of kilojoules by 239.005736138.

Example: 42 kJ to cal

  1. Start with the value in kilojoules: 42 kJ.
  2. Multiply by 239.005736138: 42 × 239.005736138 = 10,038.24092.
  3. Result: 42 kilojoules = 10,038.24092 calories.

Going the other way, 1 calorie = 0.004184 kilojoules, so to convert calories back to kilojoules you divide by the same number. See calories to kilojoules.

Kilojoules to calories conversion table

Kilojoules (kJ)Calories (cal)
0.1 kJ 23.90057361 cal
0.2 kJ 47.80114723 cal
0.3 kJ 71.70172084 cal
0.4 kJ 95.60229446 cal
0.5 kJ 119.5028681 cal
0.6 kJ 143.4034417 cal
0.7 kJ 167.3040153 cal
0.8 kJ 191.2045889 cal
0.9 kJ 215.1051625 cal
1 kJ 239.0057361 cal
1.5 kJ 358.5086042 cal
2 kJ 478.0114723 cal
2.5 kJ 597.5143403 cal
3 kJ 717.0172084 cal
3.5 kJ 836.5200765 cal
4 kJ 956.0229446 cal
4.5 kJ 1,075.525813 cal
5 kJ 1,195.028681 cal
6 kJ 1,434.034417 cal
7 kJ 1,673.040153 cal
7.5 kJ 1,792.543021 cal
8 kJ 1,912.045889 cal
9 kJ 2,151.051625 cal
10 kJ 2,390.057361 cal
11 kJ 2,629.063098 cal
12 kJ 2,868.068834 cal
13 kJ 3,107.07457 cal
14 kJ 3,346.080306 cal
15 kJ 3,585.086042 cal
16 kJ 3,824.091778 cal
17 kJ 4,063.097514 cal
18 kJ 4,302.10325 cal
19 kJ 4,541.108987 cal
20 kJ 4,780.114723 cal
21 kJ 5,019.120459 cal
22 kJ 5,258.126195 cal
23 kJ 5,497.131931 cal
24 kJ 5,736.137667 cal
25 kJ 5,975.143403 cal
26 kJ 6,214.14914 cal

More kJ to cal values

What is a kilojoule?

The kilojoule is 1,000 joules. It is the unit of food energy on labels in Australia, New Zealand and the EU (alongside kcal), and a common unit in chemistry.

More about kilojoules →

What is a calorie?

The calorie (small calorie) is the energy needed to raise the temperature of one gram of water by about one degree Celsius.

More about calories →

Convert kilojoules to other units

Convert other units to calories

Frequently asked questions

How many calories are in a kilojoule?

One kilojoule is 239.0057361 calories.

How many kilojoules are in a calorie?

One calorie is 0.004184 kilojoules.

What is the formula to convert kilojoules to calories?

cal = kJ × 239.005736138.