Weight Loss Calculator is a simple and easy-to-use instrument designed to calculate how many calories you have to burn in order to lose weight. The application was created in order to offer proper warnings if your weight loss goals are too aggressive. It allows you to select your personal details: Gender. Age; Height (in feet & inches, or in centimeters); Weight (in pounds or kilograms); Daily Activity Level; No sport / exercise; Light activity (sport 1-3 times per week); Moderate activity (sport 3-5 times per week); High activity (everyday exercise); Extreme activity (professional athlete); How much weight do you wish to lose? (in pounds or kilograms); How much time do you have? (in days). Based on the details you introduce, it will calculate the necessary amount of calories that you need in order to keep the same weight that you have at the moment, as well as the amount of calories you need in order to lose the weight that you mentioned. Technically, there is no magic number of calories we should all eat each day to lose weight. While most people can lose weight eating around 1,500 calories, Weight Loss Calculator can assess your own personal caloric needs with a little math. By using a simple formula called the Harris-Benedict principle, you can assess your basal metabolic rate, also known as your BMR. Your BMR is the amount of energy your body needs to function. We use about 60% of the calories we consume each day for basic bodily functions such as breathing.