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Blood Donor Calculator — Free Online Tool
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Blood Donor Calculator

Estimate total blood volume and check donor weight eligibility

Donor Guidelines: Standard blood donation requires a minimum weight of 50 kg (approx. 110 lbs) in most jurisdictions. Total blood volume is estimated at approximately $75\text{–}80\text{ mL}$ per kg of body weight. Enter your details below.
Donor Parameters Input

Calculation Results

⚠️ Not medical advice. For educational and screening reference only. Final donation eligibility depends on physical examination, hemoglobin testing, and blood bank guidelines.

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