There is no definitive answer when it comes to how many calories you naturally bear in a day. However, a rough estimate can be made by using your weight and height, as well as your activity level. On average, women who weigh around 125 pounds and are 5’3″ tall typically burn around 2000 calories per day. And men who weigh around 185 pounds and are 6’1″ tall typically burn around 2800 calories per day.