Technical Question - Counting Calories

Nutrition
1

Ok, when I cook a meal for myself, to correctly count the total calories and calories from fat, carbs and protein, is it as simple as adding the sum of calories from fat/protein/carbs from each ingredient?

PS: I know that 1g carb/protein = 3 cal and 1g fat = 9g

Thanks

2

Please read some articles on nutrition.

1g of carb/prot is 4 cals, and 1 g of fat is 9.

Please read some articles on basic nutrition. This is really basic stuff. You probably should have run a search, or looked at an article before posting here.