Convert calories to kilojoules and vice versa. Manage your energy intake effectively with accurate conversions.
| Parameter | Value |
|---|---|
| Calories (kcal) | |
| Kilojoules (kJ) |
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Learn how to convert between calories and kilojoules and understand the energy content of different foods.
Energy in food is measured in kilojoules (kJ) in Australia, similar to how distance is measured in kilometres. The amount of energy in food depends on the amounts of carbohydrates, fats, proteins, and portion sizes. Foods high in fats, added sugars, or alcohol have the highest kilojoule content, while fruits, vegetables, and legumes are lower in kilojoules.
Both kilojoules and calories measure the same thing: energy. The difference is in the units used. Kilojoules are part of the metric system, while calories are part of the imperial system. The conversions are as follows:
Understanding these conversions can help you manage your energy intake effectively, especially when reading nutritional labels on packaged foods or menus when dining out.
Everyone's energy requirements vary based on factors such as activity level, type of exercise, height, weight, sex, muscle mass, and age. Men typically have higher energy requirements than women due to more muscle tissue. Pregnancy, breastfeeding, genetics, health status, and age also influence daily energy needs.
To convert kilojoules to calories, divide the number of kilojoules by 4.184. Conversely, to convert calories to kilojoules, multiply the number of calories by 4.184. For example, 100 calories is approximately 418.4 kilojoules.
This conversion is handy when comparing nutritional information on food labels, especially when they are in different units.