For packaged foods, the calorie count is not always accurate. The FDA allows package labels to be off by as much as 20%.
calories from fat
All food packaging lists calorie content. 5000000000000000000 calories
it depends on what size, what are it's contents, what type of salt... even the calories listed on products which are regulated by the food and nutrition act, are not always truly accurate :P
http://www.calorieking.com/foods/ has a great list of foods and calories associated with them. But you must remember that what it says for calories is based on portion size.
Almost always, the larger a food or serving is, the more calories it is going to have.
You may find a good program to use to track the amount of calories in food at the following website..www.keepandshare.com/htm/lists/free_food_calories_list.php
I would go to a book store, and buy a book on counting calories. It will have lists of food and the calories they have per serving. It would be very helpful especially when you first start out dieting.
Not always, no.
23 divded by 111 = 0.207 times 100 = 20.7%
it is more useful to keep a food diary that tells you what you have eaten rather than counting all the calories because it might not be accurate at all.
Each food exchange contains a known amount of calories in the form of protein, fat, or carbohydrate. A patient's diet plan will consist of a certain number of exchanges from each food category
calories are energy. food contains calories, so when you eat food, the calories within the food power your body.