People will soon find it easier to count the calories at McDonalds as part of the government's Responsibility Deal.
On Wednesday (7September) McDonalds will introduce calorie information to all of its menus across its 1,200 restaurants in the UK.
Other companies signed up to the Responsibility Deal include: KFC, Pizza Hut, Pret a Manger and JD Wetherspoon.
"One in six meals are now eaten outside the home and for those meals we often have no idea how many calories we are eating," said Health Secretary Andrew Lansley.
"That is why this is such a great achievement by the Responsibility Deal. It will help people spot those hidden calories in their favourite foods and keep an eye on their waistlines."
The Responsibility Deal is the government's new approach to tackling public health concerns. The Department of Health's research shows that calorie labelling makes people more aware of the energy content of their foods and does influence people's choices.
Greggs, Starbucks and Burger King have also signed up to the 'Out of Home calorie labelling pledge' and will introduce it in their outlets from next year.