Pregnancy Due Date Calculator
Estimate your due date and how far along you are from the first day of your last period.
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- Enter the first day of your last menstrual period.
- See your estimated due date.
- Check roughly how many weeks along you are.
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FAQ
How is the due date estimated?
It adds 280 days (40 weeks) to the first day of your last period — the standard estimate.
Is this a substitute for medical advice?
No — it's an estimate. Your healthcare provider gives the most accurate due date, often via ultrasound.
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