A unit of energy referring to the energy value of foods we eat and the amount of energy the body burns. Alcohol, sugar and fats tend to be the most energy dense fuels; for example, 1 gram of fat equates to 37 kilojoules (9 calories) and 1 gram of alcohol equates to 29 kilojoules (7 calories). 1 kilojoule is equal to about 239 calories, with kilojoules commonly referred to in Australia and calories commonly used in the UK. The recommended daily intake of kilojoules is approximately 8400-9240.
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