Blood Volume Calculator

Your details

Nadler is the clinical standard; Lemmens better suits obesity; weight-based covers children and neonates.
Nadler derived separate coefficients for males and females.
cm
kg
Total blood volumeWithin typical range (mL/kg)
4.98L
In millilitres4,985mL
Per kilogram of body weight66mL/kg

Your estimated total blood volume is about 4.98 L (4,985 mL).

  • This estimate uses the Nadler equation; most healthy adults sit near 65 to 75 mL of blood per kilogram of body weight.
  • Turn on the hematocrit split to see how much of the volume is red cells versus plasma.
  • Actual volume varies with body composition, fitness, altitude, and pregnancy, so treat this as a population estimate.

Next stepClinicians use blood volume for transfusion, blood-loss, and dosing decisions, discuss your numbers with a professional.

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