How many kilojoules do I need?
Our daily kilojoule requirements vary based on things like:
- how much physical activity you do, and what type
- your height, weight, age and gender
- the amount muscle and fat you have
- whether you are pregnant or breastfeeding
- genetics and health.
The average daily intake for an adult is 8700kj – so keep this in mind when you’re checking labels on packaged foods and menus. Learn more about how to read food labels and menus.
8700 mobile app has a Kilojoule Calculator to help you estimate the number of kilojoules that are right for you. This should be used only as a guide – the most important thing is to aim for a balanced lifestyle and make small changes slowly if you want to get healthier or lose weight.
Download the 8700 app
If you think you or member of your family may be above a healthy weight, consult a qualified health professional.
Kids and kilojoules
Every child is different, so there is no exact number of kilojoules that they should eat during a day. To help work out which food and drink will help your child stay healthy, check out our
Food Calculator. And for ideas to get more physical activity in their day, here are some
tips for getting active as a family.
If you want to know whether your child is at a healthy weight, our
healthy weight calculator can give you an idea and may help start a conversation with your doctor if you want more information about supporting your child’s healthy growth and development.
We are using energy all day – even while we sleep. Our bodies need kilojoules to function. But if we consume more kilojoules than our bodies use, the spare energy can lead to excess weight gain.
When we are active, our bodies 'burn' or use up more energy. Regular physical activity helps you maintain a healthy weight and overall good health. It can also reduce your risk of chronic diseases and support your
mental health. Check out these
small steps to start getting more active.