As a sanity check: fat is around 9 kcal per gram. In a day you use around 2000 kcal of energy or 222 grams of fat. Protein and carbohydrates are around 4 kcal p

As a sanity check: fat is around 9 kcal per gram. In a day you use around 2000 kcal of energy or 222 grams of fat. Protein and carbohydrates are around 4 kcal per gram. The numbers are in the right ballpark.