Please provide values below to convert kilojoules [kJ] to calories, or vice versa.
The formula to convert kilojoules to calories is:
1 kJ = 0.239006 cal (approximately), or
1 kJ ≈ 0.239 cal.
Examples:
100 kJ ≈ 23.9 cal
200 kJ ≈ 47.8 cal
500 kJ ≈ 119.5 cal
Kilojoules (kJ) are a unit of energy in the International System of Units (SI). The term "joule" is derived from the name of James Prescott Joule, an English physicist who first described the relationship between mechanical work and heat. Kilojoules are used to measure the energy content of foods and the energy expended by the human body during physical activity. The main use of kilojoules is in the fields of nutrition, physics, and engineering.
Calories (cal) are a unit of energy that was originally defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius. The term "calorie" comes from the Latin word "calor," meaning heat. Calories are commonly used to measure the energy content of foods and the energy expended by the human body. The main use of calories is in the fields of nutrition, dietetics, and health sciences.
The formula to convert calories to kilojoules is:
1 cal = 4.184 J (exactly) or
1 cal ≈ 0.004184 kJ (approximately) or
1 cal ≈ 4.184 kJ / 1000 = 0.004184 kJ (approximately)
To convert calories to kilojoules, you can multiply the number of calories by 4.184 and then divide by 1000.
Using the conversion factor: 500 kJ × (0.239006 cal / 1 kJ) ≈ 119.5 cal
So, there are approximately 119.5 calories in 500 kilojoules.
| 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 |