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What is the formula for calculating calories if you have the specifics for protein, carbohydrates, and fat?


Basically the question says it all. I have to calculate how many calories are in a meal that has 12 grams of protein, 29 grams of fat, and 55 grams of carbohydrates but I can't find the formula to do so. Thanks!

The label on the food item should have the calorie content of the food. Other wise its good to know:

Fat=9 calories per gram
carbs=4 calories per gram
protein=4 calories per gram

so multiply the grams by the appropriate number!!

example: 12 g protein x 4=48 protein calories
29 fat x 9= 261 fat calories
55 carbs x 4=220 carb calories
529 calories total




kelly

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