Fast-food kilojoules on display in Qld

The kilojoule content of fast-food meals and drinks must be displayed on menus across Queensland from Friday.

The law applies to takeaway, bakery, cafe and supermarket chains with more than 20 outlets across the state or 50 across Australia.

It requires the kilojoule or energy content to be placed on all labels and in-store and takeaway menus, as well as on websites and apps.

The recommended average daily energy intake for adults must also be displayed.

Cancer Council Queensland chief executive Chris McMillan said it was crucial for people to know how many kilojoules they consumed each day.

"One large barbecue meatlovers pizza alone contains 8817 kilojoules - more than the recommended average adult daily energy intake of 8700 kilojoules," she said in a statement.

"A standard beef burger and side of fries has up to 3500 kilojoules - almost half the daily energy intake.

"An everyday snack like a latte and chocolate caramel muffin can quickly clock up 3180 kilojoules."

The state government has given food businesses a year to prepare for the new requirement.