Can a number of calories be measured in grams?

Can a number of calories be measured in grams?
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Answer :

To be accurate you need to know the ratio of fat, carbs, protein and alcohol. (You can call fiber zero). Each one has a slightly different calories per gram value But you can get close. Fat: 1 gram = 9 calories Protein: 1 gram = 4 calories Carbohydrates: 1 gram = 4 calories Alcohol: 1 gram = 7 calories
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