Calories and Kilojoules in Foods



As a human being, we need a lot of energy to do our day-to-day activities regularly. We get our daily energies from different sources. However, Foods are considered as a prime source of energy. So most of the energies that our body needs come from foods sectors. In that case, you should have a clear conception of energy you need daily to maintain a good health. Especially if you are one of them who are very concerned about their excessive weight.


Furthermore, to lose weight or maintain smart health through a healthy dieting you need to understand the right portion of energy that comes from foods sectors daily. Nevertheless, the matter is how you would measure the amount of energy. By understanding both calories and kilojoules, you can measure your energy portion of foods. It is often very confusing that to measure the amount of energy as it given sometimes in the form of calories and sometimes in the form of kilojoules. However, either calories or kilojoules are used to measure the number of energy you need in your diet, still there are few distinguishes are found between them. Perhaps, you need a clear understanding of calories and kilojoules to understand weight loss diet plan.


Here I would like to discuss you what the calories and kilojoules in foods really are and these basic tips may help you reduce your confusion a bit.


What is Calorie in Foods?


The calorie is normally used to understand how much energy you are taking in and how much are burning out daily. That means it is a measurement used to measure the amount of is a unit of energy. Every day we consume a lot of energy from eating foods or drinks. How much energy we are consuming you can understand the description of calories often labeled on foods pack or by using calorie counter.


For example-


Eating something of 1000 calories, which is how you will understand how much energy you are getting from that certain portion of the food item or drink.


Therefore, calorie can be termed into two-one is large calorie and another one is a small calorie.


Difference between a large and a small calorie gave below-


1 large calorie which is defined as kilocalorie (kcal) contains 1000 calories in it.

I.e. 1000(C) = one kilocalories or large calorie


So if you are very concerned to lose your weight through proper dieting you should limit consuming the foods have excessive calorie. Thus, understanding the calories issue accurately help you select your proper foods options for eating.


What is Kilojoules in Foods?


Kilojoules are used to measure the amount of energy that comes from our daily consumption of foods. But the amount of energy that comes in entirely depends on the three substances of foods contained in these are likely- fat, carbohydrate, protein.


Some Foods like- fruits, vegetables and legumes are relatively considered as a low energy (kilojoule) dense foods. Some foods, on the other hand, are highly enriched with fats, added sugars or alcohol consider as most energy-dense foods. This is why you should consume them moderately, particularly if you are suffering from overweight or obesity.


The other way to measure, the amount of energy you need or consume from foods or drinks is kilojoules. By understanding kilojoules, you can measure how much energy you consume and burn out daily. It is exactly the same way you measure the amount of energy by counting calorie. But the fundamental difference in between both is the variation of unit you use to measure something.


For example –

1 calorie(C) = 4.184 kilojoules


4.184 kilojoules = (you can say) 1 C

So understanding the kilojoules help you to select the foods contain more or less calorie.


What are the Basic Distinguishes in Between Two?


The basic difference is absolutely nothing but the variation of the unit we generally use to measure anything.


For instance-


Calories are thought the most conventional way of unitary measurement of energy used to measure the energies that come from foods or drinks only. Kilojoules, on the other hand, is also a unitary system to measure the amount of energy come from foods or drinks as well. Nonetheless, kilojoule is a multiple forms of joules, which is specifically used to measure the energy of alone by using the international system of units by researchers. That means, joules is also used to measure the Foods’s quantity in its multiples form, which is known as kilojoules (KJ) most popularly. You can say kilojoules are used to measure the energy from foods and drinks alone and a joule is only for measuring energy from other sources. In many regions of the world kilojoules (kJ) is widely used on foods label to help the customer understand the portion of calories come from that certain food product. In some of the regions, they use both calorie (Cal) / kilocalories (kcal) and kilojoules (KJ) on their food labels to help their public understand the energy portion of foods well. But in some other countries, they used only one criterion to measure the energy of foods or drinks whether that can be in calorie(C)/kilocalorie (Kcal) or in the form of kilojoules (KJ)


For example-


In EU, they use both the kilojoules and kilocalories on their foods products and on the other side, in the USA and in Canada they use just in calorie it is either in small calorie (Cal) or in lager calorie (kcal) on their foods labels.


The basic variation of calorie and kilojoules gave below-

1 calorie(C) = 4.184 kilojoules


4.184 kilojoules = (you can say) 1 C


1 kJ = 0.2 Calories (Cals) 1 Calorie = 4.2 (kJ)          

Here is a chart of energy values for various foods component is given below-

37 (kJ) of Fat = 9 Cal) but not all fatty acids may contain the same amount of energy

29 (kJ) of Alcohol = 7 (Cal)

16 (kJ) of Carbohydrates = 4 (Cal) – but not all carbohydrates may contain the same amount of energy 

17 (kJ) of Protein = 4 (Cal)

13 (kJ) Dietary fiber – 3 (Cal) – if it is fermented by bacteria in the large intestine

Zero kJ of Water = zero (Cal).


So understanding the variation between both calorie and kilojoules will help you a lot to grab the exact amount of energy you need for your daily activity. Because, if you consume more energy than you need, it might be stored as a fat in your body what often makes your weight loss program unsuccessful. Therefore, having the idea of kilojoules and calorie is helpful for those especially who are in a weight loss process. Without understanding the matter of kilojoules and calorie, you cannot exactly hit the appropriate calorie intake for you.