How much do you really need of carbs protein and fat

The following is what is reccomended...my own personal way of doing things is,
40% Carbs
30# fat
30% protein

Carbs…What you really need
Found in legumes, grains, vegetables, fruits, milk, baked goods and many other foods.
This is your body’s main energy source. . Most carbohydrates are naturally occurring in plant-based foods. Food manufacturers also add carbohydrates to processed foods as starches or added sugar.
Get 45 to 65 percent of your daily calories from carbohydrates.
Carbohydrates have 4 calories per gram.
* Based on a 1500 -calorie-a-day diet, this amounts to 675 to 975 calories a day, or about 170 to 245 grams.

Protein
Protein is an important nutrient, essential for growth and development
It takes more energy for your body to digest therefore it can be a metabolism booster. Protein is also an important source of calories and energy
Get 10 to 35 percent of your total daily calories from protein.
Protein has 4 calories a gram.
Based on a 1500 -calorie-a-day diet, this amounts to about 150 to 525 calories a day, or about 38 to 130 grams a day

FAT
. Dietary fat is a nutrient that helps your body absorb essential vitamins, maintains the structure and function of cell membranes, and helps keep your immune system working
Limit total fat to 20 to 35 percent of your daily calories.
Fat has 9 calories a gram.
Based on a 1500-calorie-a-day diet, this amounts to about 300 to 525 calories a day, or about 35 to 60 grams of total fat.