On this website you can find information about the calorie intake of some of the most popular food brands, such as McDonald’s, Subway, Olive Garden, Taco Bell, Burger King, Starbucks and so on. Here’s an example:
McDonald’s Big Mac Burger contains 540 calories, out of which 252 are calories from fat.
Burger King Original Chicken Sandwich contains 660 calories, out of which 360 from fat.