Our blood volume calculator uses three methods to determine the total blood volume. The first one uses Dr. Nadler’s formula, the second one is an equation developed by Dr. Lemmens, Dr. Bernstein, and Dr. Brodsky, and in advanced mode you can find a very simple method that gives a better perspective on the previous two.
Preoperative assessment of estimated blood volume (BV) is essential for patients undergoing surgery. It impacts perfusion care, including hemodynamic and pharmacologic interventions, and transfusion practices.
This is a calculator of blood volume for adults. If you want to estimate the blood volume in a child, use our pediatric blood volume calculator.