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NadlerCalc
Estimate how much blood is in your body using Nadler's anthropometric formula.
Nadler's equation (1962) estimates blood volume from height and weight with sex-specific coefficients. For males: BV = 0.3669 × H³ + 0.03219 × W + 0.6041. For females: BV = 0.3561 × H³ + 0.03308 × W + 0.1833. Height is in meters, weight in kg, result in liters. The average adult has 4.5–5.5 liters of blood.
Blood volume is critical in surgical planning (estimating allowable blood loss), fluid resuscitation, anesthesia dosing, and understanding cardiovascular health. Athletes tend to have higher blood volumes relative to body size. Dehydration can reduce blood volume by 10–15%, affecting performance and blood pressure.
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OpenEstimated blood volume
4.98 L
What you entered
Height in meters
175 ÷ 100= 1.75 mHeight cubed
1.75³= 5.3594Blood volume (Nadler's)
0.3669 × 1.75³ + 0.03219 × 75 + 0.6041= 4.98 LConvert to milliliters
4.98 × 1000= 4,985 mLResult
Blood volume: 4.98 L
Using the Nadler equation for a male at 175 cm and 75 kg, the estimated total blood volume is 4.98 liters (4,985 mL).