Calories are really a measure of heat.
You may recall from high-school Biology that plants use light energy in the process of photosynthesis to produce carbohydrates, fats and proteins. Thus, food contains energy which is released and converted to other forms of energy when the chemical bonds between molecules are broken.
Typically, to measure the energy content of food, a method called 'direct calorimetry' is used.
The food, normally about 1 gram of it, is placed in a sealed chamber called a 'Bomb calorimeter' that has water surrounding it. The piece of food is then burned (oxidized) by an electrical current. As the food burns, the water temperature rises due to the heat. This rise in water temperature reflects the energy content of the food.
Not all fats in our diet has the same energy content. Some fatty acids have about 8.6 kcals/g whereas some longer chain fatty acids may have 9.6 kcal/g.
However, for the sake of simplicity, we generally say that 1 gram of fat contains 9 calories (carbohydrates and protein contain 4 calories).
Therefore, if the food you are wondering about says it contains 8 grams of fat for example, then you know it represents about 72 calories of energy, i.e.,
8g x 9kcal/g = 72 kcal
If it has 14 grams of fat, then it contains 126 calories (14 x 9 = 126), and so on...
Scribbles222
Ok you could read all that. Or you could just multiply the number of grams you have by 9. All fats, multiplied by 9 gives you that amount in calories. However, if you want to find the amount of calories in one gram of protein of carbohydrates then multiply grams by 4.
The nutrition label should tell you how many grams of fat are in one serving. Look under "total fat" which is listed in grams. Then you can look at how big a serving size is to see if that is what you are actually eating.
you have to figure it off of the food label of whatever you are eating........ Meaning if the food label says 2 servings per package you have to double the fat grams. They are only listing calories and fat and all the nutrition items by the serving size. You have to pay attention to serving sizes
Not many people are smart enough to know exactly how much fat is in their food, but you can tell by how heavy (not weight) the food is. Like it's obvious that cupcakes will have a large amount of fat, but the apple slices will have a low amount of fat.
You can't unless you know what the grams are. Grams are a weight measurement but Calories are an energy measurement.
divide it by 9
1gm fat = 9 calories
150 grams of fat in serving of butter
It depends on how large the serving is. For example: if your serving size is 100 grams, than there will be 9 grams of fat in that serving. If the serving size is 30 grams, than there are 3 grams of fat for that serving.
100
20 grams.
Depends what you serve. -Salad - 0 fat, -pork chop, lots of fat.
One serving of strawberries has around 4.5 grams of fat per serving
.5 grams per serving. (49 g)
1.46
How many grams of fat that are in a Caesar Salad would depend upon where you buy it from or if you make it yourself, the serving size and the ingredients put into it. In general, 1 cup of Caesar Salad contains approximately 15 grams of fat.
Less than 0.5 grams of fat in a serving.
5.15
Less than 0.5g. Less than 0.5 grams of fat per serving is considered a nutritionally insignificant amount of fat.