How can i know my caloric intake?

BASAL METABOLIC RATE: Your caloric intake is based onbmr, do a little math to calculate your bmr, which will tell you how many calories you need to maintain your weight. Men 66+(6.3xweight in pounds)+(12.9 x height in inches)z--(6.8(x age in years) women 66+(4, 3 x weight in pounds)+(4.7x height in inches)--(4.7x age on years) that is your BMR add activity inactivebmrx20% light actbmrx30% veryx40% bmr+activity is calories.