How Much Blood Do You Have
in Your Body?

Blood makes up about one twelfth of the weight of the body.

In an average women, the volume of blood is 4-5 litres. In a typical man, the volume is 5-6 litres.

At any one moment, only 1/20th of the body’s blood is in the capillaries. Most, around three-quarters, is in the veins.