Calories To Kilojoules Calculator

Use this calories to KJ calculator to convert calories to kilojoules by entering the amount of calories that you are wanting to convert!

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What is a calorie?

The official definition of a calorie is “…the amount of heat needed to raise the temperature of a liter of water 1 degree (DHHS).” But if that’s a little too scientific for you, think of it this way… A calorie isn’t actually a tangible thing, it’s a unit of measurement. A calorie measures the energy in food and beverages we take in. We all need that energy to live. Everything we do relies on the energy that comes in the form of calories. The food we eat becomes the fuel that runs our bodies. Drinks also contain calories; sodas, for example, are referred to as “empty calories” meaning they carry no other nutritional value; but the calories definitely still count. No matter the form of your calories … if you “overload your tank” you will find yourself gaining weight.

What are Kilojoules?

A kilojoule is a unit of measure of energy, in the same way that kilometers measure distance. Food energy can also be measured in terms of the nutritional or ‘large’ Calorie. One Calorie (Cal) has the same energy value as 4.186 kilojoules (kJ). This should not be confused with the ‘small’ or gram calorie, which is used by scientists to measure the amount of energy required to heat water. There are 1,000 (small) calories in one (large) Calorie, which is why it is also sometimes known as a ‘kilocalorie’. The terms ‘calorie’ and ‘Calorie’ are often used interchangeably, which can be confusing.

4.184 kilojoules = 4,184 joules = 1 Calorie = 1 kilocalorie = 1,000 calories