What is the weight of human blood?

The average density of human blood is about 1.06 g/mL. The average blood volume in an adult male is about 5.6 liters, while the average blood volume in an adult female is about 4.7 liters. Therefore, the average weight of human blood in an adult male is about 5.952 kg (13.12 lb), while the average weight of human blood in an adult female is about 5.002 kg (11.02 lb).