Read the packaging again when people talk about calories they are actually talking about Kcals.Originally Posted by CribGoch
From http://www.weightlossresources.co.uk/calories.htm
In scientific terms:
1000 calories = 1 kilocalorie = 1 kcal = the energy it takes to raise the temperature of 1kg of water by 1°C.
In nutrition terms:
ie. What you'll find on food packaging, calories = kilocalories and are used interchangeably.
In some instances food energy is measured in kilojoules - mostly by the scientific community - though some food packaging also gives kilojoule (kJ) values. 1 kilocalorie = 4.2 kilojoules.
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