how to calculate the precentage of calories that come from fat?
if for each gram of fat there is nine calories.
To calculate the percentage of calories that come from fat, you need to follow these steps:
1. Determine the total number of calories in the food or meal you are analyzing.
2. Find the total number of grams of fat in the food or meal.
3. Multiply the total grams of fat by the number of calories per gram of fat (which is 9 calories per gram).
4. Divide the result from step 3 by the total number of calories determined in step 1.
5. Multiply the result from step 4 by 100 to get the percentage.
Here is the formula for calculating the percentage of calories from fat:
(Total grams of fat x 9 calories per gram) / Total calories = Percentage of calories from fat * 100
Let's say you have a food item that contains 15 grams of fat and the total number of calories in the food is 250. Using the formula, you would calculate it as follows:
(15 grams x 9 calories per gram) / 250 calories = 0.54
To express it as a percentage, multiply the result by 100:
0.54 x 100 = 54%
So, in this example, 54% of the total calories in the food come from fat.