BMR & Protein Calculator | Muscle First Nutrition Muscle First Nutrition BMR & Protein Calculator Enter your details to know your calories, protein needs & product suggestions. Age Gender Male Female Height (cm) Weight (kg) Activity Level Sedentary (little/no exercise) Lightly active (1-3 days/week) Moderately active (3-5 days/week) Very active (6-7 days/week) Super active (twice daily training) Fitness Goal Fat Loss Maintain Muscle Gain Calculate