The amount of urine a child's bladder should hold can be calculated by the following equation:
Bladder capacity by age:
Age + 2 = Bladder Capacity (in ounces)
or
(AGE + 2) 30 = Bladder Capacity (in milliliters/cubic centimeters)
For example, a 5-year-old child's bladder should hold:
5 + 2 = 7 ounces
or
(5+2) 30 = 210 ml or cc's