Basal Metabolic Rate (BMR) is the minimal energy requirement needed to sustain life in a resting individual. The Sam Gurgis BMR calculator allows you to calculate your BMR easily and quickly. Just open the Sam Gurgis BMR Calculator and enter some details. You can also use the Sam Gurgis BMR Calculator to see how many extra calories you consume when active. The Sam Gurgis BMR Calculator is a free tool.