Subtract your fat and protein intake values in Calories from your TDEE to calculate your required carbohydrate intake. So a quick way to calculate that would be to figure out your maintenance intake and then subtract 500 calories from that figure. Enter total daily calorie intake.
Next multiply the total number of grams of fat by 9 since 1 gram of fat is equal to 9 calories.
Divide this result by the total number of calories to get the percent of carbohydrates in the food. To calculate the percentage of carbohydrate take the grams of carbohydrate listed and multiply it by four. Since each carb contains 4 calories youll be setting your carb. Finally divide your calorie amounts by its calorie-per.