Health

Blood Loss Calculator

Estimate blood loss and hemorrhage classification.

Weight (kg)

Gender

Pre-op Hematocrit (%)

Current Hematocrit (%)

Estimated Blood Loss—

Total Blood Volume—

% Blood Volume Lost—

Hemorrhage Class—

EBL = TBV × (Hct_pre − Hct_post) / Hct_pre
TBV = Weight × 70 mL/kg (male) or 65 mL/kg (female)