How the calories in a food are being measured?
915069
The food is "burned" in a bomb calorimeter.  The energy given off by the food causes the water to change temperature.  The change in temperature of the water allows us to calculate the calorie value of the food sample.
951592
Here ya go:\nhttp://www.muscletech.com/CALCULATORS/CALORIE/Calorie_Calculator.shtml?text\nEnter in your personal info such as your goal, age, height, weight, etc and it will calculate it for you.
827265
If you're human, you do.  The food you eat is broken down to make the energy you need to live.  The energy is measured in calories.
832018
Actually the above answer (and source) is incorrect.  In most situation there is a difference.  "C"alorie, in the capital sense is meant to denote a kilocalorie, or 1000 "c"alories (in the lowercase sense).  Every Calorie on the back of the food boxes are indeed 1000 calories.\n\nThe problem is that these two terms are often misused, and misrepresented.  A calorie in laymans terms is actually a kilocalorie, but rather than saying all of that, and making it a markedly more confusing term, it was simplified to Calorie.\n\n\n\nTiger Striped Dog MD
475611
go to ediets.com\nthere is a nutritional tracker on there for free. it works wonders. it calculates calorites, fat, protein, etc.  there is also alot of information you can read there too. if you want to lose weight, you should burn as much as you eat. remember that you burn calories just doing simple things. try vacuming the house!
873991
There are 9 cal/gm of fat or 9000 per kilogram.  Similarly if we are dealing with carbohydrate or protein then there are 4 calories per gram or 4000 per kilogram.
482770
Calories is the unit to measure heat, where as Fat in terms of Chemistry is long chain molecules of fatty acids due to which Fat is solid at lower temperatures. \nIn common language calories is used to tell the amount of heat we can get from a specific food, and fat is the extra calories which are stored in body.
1009071
There are two primary methods to measuring basal metabolic rate - direct calorimetry and indirect calorimetry.  Both of these normally require equipment that most people would not have at their disposal.\n\nOften, a rough estimate can be determined that ranges from 9 to 13 calories per pound .. (9 if you're not very active, 13 if you'r active).   And then reducing this by 100 calories for every 10 years older than 30.
843571
A calorie is a calorie. You can diet by counting them or by counting carbs. Try to stick to one serving at a meal. Try to avoid fatty foods. Eat one carb per meal. Watch serving size. Avoid deserts. Drink lots of water. Exercise.
21856
There is not direct relationship.  I suppose if you intake too many calories, then your BMI will rise to an unsafe level.  And what do you mean by the "number of calories?"  In the universe?  In a McRib sandwich?  In me?  Haha, just kidding with you, but this question really does not make an sense.
793951
I like http://www.calorielab.com\n\nJust type in the food you are seeking calorie count for and you'll get more info than you imagined...lol!
951357
go to Fitnessmagazine.com first, you will find a chart for your age, exercise activity, and weight. When your at a resteraunt you just ask for calories, they are required to carry a list of everything with all of the ingrediants and caliories.
1044823
Converting from KJS (kilojoules) to Calories: \n\nMultiply the number of kjs by 0.239 \n\n1 kjs = 0.239 Calories\n320 kjs =76.48 \n\nConverting from Calories to KJS: \n\nMultiply the number of Calories by 4.184 \n\n1 Calorie = 4.184 kjs\n75 Calories = 313.8 kjs
1069058
The nutrition books are correct-- 3500 calories per pound of fat is not an absolute amount, but it's very close. However, your math is correct, too. Here is the story. \n\nWhen we burn fat, or other nutrients, heat is produced, which is measured in calories. As you note, each gram of fat generates 9 calories, and 454 grams equals one pound. But a pound of fat is not all fat. It's about 10% water. All of our body tissues--fat, muscle, bone, skin--contain some water. And water has zero calories.
365683
1g of protein = 4 calories\n1g of carbohydrates = 4 calories\n1 g of fat = 9 calories
964710
Apple: 1 small is about 60 cal, 1 large is about 120 cal\nBanana: 172 for a large one\n1 pickle: 7\n1 carrot: 52\n1 tomato: 7\ngrapes: 2 each
444523
The 2000 calorie FDA label is total calories.\n\nCalories from fat should already be included in the total calorie heading.  If you're on a 1000 calorie diet for whatever reason (not really recommended but it's your choice), then you count the total calories for each food.\n\nThe calories from fat are just part of the breakdown.  There are also the calories from carbs and protein.