ObsObstetrics

Expected Delivery Date — Naegele's Rule

Calculates the expected date of delivery (EDD) from the last menstrual period (LMP) using Naegele's Rule.

LMP Day (1–31)

LMP Month (1–12)

LMP Year (e.g. 2025)

Reference: Naegele FC. 1812

Medical Disclaimer: This calculator is a clinical decision support tool for qualified healthcare professionals. It does not replace clinical judgement. Always interpret results in the full clinical context. Reference: Naegele FC. 1812.

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