Health
Pregnancy Due Date Calculator
Estimate due date from last menstrual period (Naegele's rule).
Inputs
Pregnancy Due Date Calculator
Result
Estimated due date
Tue Jun 22 2027
- Current gestational age
- 0 weeks, 0 days
Due date basics
Pregnancy is dated from the first day of the last menstrual period (LMP), even though conception happens ~2 weeks later. Full term is roughly 40 weeks or 280 days from LMP. Only about 4% of babies arrive on the estimated due date — most come within a two-week window around it.
Related date tools
Track milestones with the Age Calculator and the Countdown Calculator, and time cycles with the Ovulation Calculator.
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