Sam Gurgis BMR Calculator - Version 1.0 Basal Metabolic Rate (BMR) is the minimal energy requirement needed to sustain life in a resting individual. In other words, this is the minimum amount of calories that your body needs just to stay alive. BMR values vary according to gender, age, weight and height. A big proportion of the calories we expend daily are used just to keep us alive. Given this fact, it is clear that calorie restriction is a very important consideration when dieting. By knowing your BMR, you know how much food (calories) you need to consume to lose, maintain or gain weight. The Sam Gurgis BMR calculator allows you to calculate your BMR easily and quickly. Just open the Sam Gurgis BMR Calculator, select your gender and enter your age, weight and height. Then, press "Calculate Daily Calorie Needs". Leave lifestyle option on "Sedentary". You can also use the Sam Gurgis BMR calculator to see how many extra calories you consume when active by selecting one of the other lifestyle options: "Light activity", "Moderate activity" or "Very active". The Sam Gurgis BMR Calculator is a free tool. Best of luck