Do you need to eat more to build muscle? Find your starting calories

Do you need to eat more to build muscle? Often only a little more, and sometimes no more at all. Your starting point is your maintenance: the calories that keep your weight steady.

Use the calculator to estimate yours with the Mifflin-St Jeor equation, compare holding steady with a small 5-10% step up, and learn how to check the number against your own scale.