With your burrito (240-1170 cals), bowl (100-420 cals), tacos (340-690 cals) or quesadilla (340-1310 cals) additional calories for toppings. Adults and youth (13 and older) need an average of 2000 calories a day, and children (ages 4-12) need an average of 1500 calories a day. However, individual needs vary.