Explanation

Human blood volume. An average adult has between 9 and 12 pints of blood in their body. The volume of blood in a person’s body will vary according to their size and other factors, but the average quantities of blood are as follows: An average-sized woman has about 9 pints of blood.An average-sized man has about 12 pints of blood. An infant has 75 to 80 milliliters of blood per kilogram (ml/kg) of body weight. A child has 70 to 75 ml of blood per kg of body weight.