Free lists and searchable databases of food calories are available at CalorieKing.com, WebMD.com, FatSecret.com and KeepandShare.com. All of these provide calories from meals at various restaurants and brands of foods as well as calories in individual food items.
Because foods in a meal come in different portion sizes and are made from different types and amounts of foods, it is usually necessary to calculate the calories in a meal from the calories of each ingredient in it. To calculate the calories in a casserole, each item's calories are added together and the total divided by the number of servings.
Calorie King offers calorie counts for frozen and packaged meals, fast food, and other chain restaurants. Users can also search by brand name. WebMD and Fat Secret have somewhat different lists of restaurant and brand foods, including store brands. KeepandShare includes printable calorie lists for meals from certain cuisines, such as Chinese food.