A kilojoule (like a calorie) is a measure of energy in food. We're all different, so give this easy calculator a go to find out just how many kilojoules you need each day. It's a brillant start to thinking about what you eat and it only takes a moment.

Kilojoule calculator: http://www.healthier.qld.gov.au/eat/#how-many-kilojoules-do-you-need-each-day