Protein Calculator Protein Calculator for Men (Age 40+) Protein Calculator for Men (Age 40+) Calculate your daily protein intake based on your weight and activity level. Enter your weight (in pounds): Select your activity level: Sedentary (little to no exercise) Lightly active (light exercise/sports 1-3 days a week) Moderately active (moderate exercise/sports 3-5 days a week) Very active (hard exercise/sports 6-7 days a week) Extra active (very hard exercise/sports & physical job) Calculate Protein Intake