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Pregnancy due date calculator
Enter your LMP to estimate due date (~280 days), current week+day, days remaining, and trimester milestones.
How to use
- Pick last menstrual period date.
- Read due date and current week.
- Review milestone dates.
What the tool does
Applies Naegele’s rule locally.
What the tool does not do
Not a medical diagnosis — confirm with your clinician.
Tips
- Ultrasound dating may adjust ETA.
- Track symptoms separately with your care team.
FAQ
- Why 280 days?
- Standard obstetric estimate from LMP (40 weeks).
- Private data?
- Stays in your browser only.
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