This calculator gives you the basal metabolic rate (BMR), daily requirements of calorie, carbohydrates, proteins, and fats in terms of calories and grams/day in adult males and females in 3 cases: To maintain current weight, to lose weight by a certain number of pounds per week, and to gain weight by a certain number of pounds per week. This calorie calculator will help you, if you are trying to lose weight and control obesity. Obviously, if you are trying to lose weight, you must use more calories than you take in. The best way and the accepted way for weight loss is to lose weight over a long run, making slight intake reduction changes and slight increases in calorie burning