Kilojoules To Kilocalories Conversion


1 kJ = 0.2388458966275 kcal

Want to convert from kilocalories to kilojoules instead?

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How to convert kilojoules to kilocalories (kJ to kcal)

The formula for converting kilojoules to kilocalories is: kcal = kJ × 0.2388458966275. To calculate the kilojoule value in kilocalories first substitute the kilojoule value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 kilojoule in kilocalories we follow these steps:

kcal = kJ × 0.2388458966275

kcal = 1 × 0.2388458966275

kcal = 0.2388458966275

In other words, 1 kilojoule is equal to 0.2388458966275 kilocalories.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 7 kilojoules to kilocalories is:

  1. Understand the conversion formula: kcal = kJ × 0.2388458966275
  2. Substitute the required value. In this case we substitute 7 for kJ so the formula becomes: kcal = 7 × 0.2388458966275
  3. Calculate the result using the provided values. In our example the result is: 7 × 0.2388458966275 = 1.6719212763925 kcal

In summary, 7 kilojoules is equal to 1.6719212763925 kilocalories.

Converting kilocalories to kilojoules

In order to convert the other way around i.e. kilocalories to kilojoules, you would use the following formula: kJ = kcal × 4.1868. To convert kilocalories to kilojoules first substitute the kilocalorie value into the above formula, and then execute the calculation. If we wanted to calculate 1 kilocalorie in kilojoules we follow these steps:

kJ = kcal × 4.1868

kJ = 1 × 4.1868

kJ = 4.1868

Or in other words, 1 kilocalorie is equal to 4.1868 kilojoules.

Conversion Unit Definitions

What is a Kilojoule?

A kilojoule (kJ) is a metric unit of energy in the International System of Units (SI). One kilojoule is equal to 1,000 joules. It is commonly used in nutrition and chemistry to express the energy content of foods and the energy released or absorbed in chemical reactions.
In the context of nutrition, kilojoules are often used to measure the energy value of foods and beverages. The energy we obtain from the food we eat is usually expressed in kilojoules or kilocalories (commonly referred to as calories). One kilocalorie is approximately equal to 4.184 kilojoules.
In chemical reactions, especially in the field of thermodynamics, energy changes are frequently measured in joules or kilojoules. The prefix "kilo-" denotes a factor of 1,000, so 1 kilojoule is equivalent to 1,000 joules.

What is a Kilocalorie?

A kilocalorie (kcal), commonly referred to as a Calorie with an uppercase "C," is a unit of energy used in the field of nutrition and dietary measurement. It represents the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius. In scientific terms, 1 kilocalorie is equal to 1,000 calories (lowercase "c"), which are the smaller units used in physics.
In the context of nutrition, the energy content of food and beverages is often measured in kilocalories. For example, if a food item contains 100 kilocalories, it means consuming that food provides the body with 100,000 calories of energy. Kilocalories are widely used on food labels and dietary recommendations to indicate the energy content of various foods and drinks.

Kilojoules To Kilocalories Conversion Table

Below is a lookup table showing common kilojoules to kilocalories conversion values.

Kilojoule (kJ)Kilocalorie (kcal)
1 kJ0.2388458966275 kcal
2 kJ0.477691793255 kcal
3 kJ0.7165376898825 kcal
4 kJ0.95538358651 kcal
5 kJ1.1942294831375 kcal
6 kJ1.433075379765 kcal
7 kJ1.6719212763925 kcal
8 kJ1.91076717302 kcal
9 kJ2.1496130696475 kcal
10 kJ2.388458966275 kcal
11 kJ2.6273048629025 kcal
12 kJ2.86615075953 kcal
13 kJ3.1049966561575 kcal

Other Common Kilojoule Conversions

Below is a table of common conversions from kilojoules to other energy units.

1 kilojoule in joules1000 J
1 kilojoule in megajoules0.001 MJ
1 kilojoule in gigajoules0.000001 GJ
1 kilojoule in calories238.8458966275 cal
1 kilojoule in watt hours0.27777777777778 Wh
1 kilojoule in kilowatt hours0.00027777777777778 kWh
1 kilojoule in watt seconds1000 Ws
1 kilojoule in electron volts6241509074461000000000 eV