My guess is that this is an advertisement.  But if it's not, then I don't understand the question.  Any number of websites can easily give you your daily caloric needs based on your weight/height/age/gender.

You can find out what your basic metabolic rate (how many calories your body burns just by being breathing) is with this formula http://www.shapefit.com/basal-metabolic-rate.html  This is the lowest number of calories your body burns just by laying around all day long.  However, let's assume you walk to the kitchen, drive, climb stairs, pick up the remote, all those things burn extra calories.  Losing weight is a numbers game, burn more calories than you consume.  There's no diet plan that does not take that into account.