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Obstetrics and Gynecology

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Estimated Fetal Weight - Hadlock Formula

Estimates fetal weight based on ultrasound biometric measurements. Hadlock formulas are among the most widely used formulas in obstetrics.

Measurements may be entered in mm or cm; values are converted to cm internally for calculation.

Complete the fields and press Calculate.
Note: MedicalC is NOT medical software and does NOT issue diagnoses or treatment recommendations. The calculators are for educational and informational purposes, use published medical formulas, and are not a substitute for medical consultation. Results should be interpreted by professionals.Read the full disclaimer.