how much protein per day for muscle growth
So a more precise method of calculating just how much protein you need to gain muscle is based on your lean body weight, not your total body weight. It goes like thisâ¦. Lean Mass Weight (kg) x 2.75 = Daily Protein Requirement. (By the way, you simply divide pounds by 2.2 to get the equivalent in kilograms. So 170 pounds is 77.27 kg) Formula for protein to build muscle: Lean Mass Weight(kg) x 2.75 = Daily Protein Grams Click To Tweet.