Pregnancy Due Date Calculator — Estimate Your Baby’s Due Date

Pregnancy Due Date Calculator

Estimate your due date, conception date, and key pregnancy milestones.

Calculation Method

First Day of Last Period

Average Cycle Length (days) — LMP method only

Estimated Due Date

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Naegele’s Rule: Due date = LMP + 280 days (40 weeks). Only 5% of babies arrive on the exact due date — full term is 37–42 weeks. Due dates are estimates, not deadlines. Always confirm with your healthcare provider.

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