Pregnancy Due Date Calculator
Calculate your estimated due date and track your pregnancy progress.
Normal range: 21-35 days. Default is 28.
Estimated Due Date
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Current Week
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Trimester
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Days Until Due Date
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Pregnancy Timeline
Conception (estimated)
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End of 1st Trimester
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End of 2nd Trimester
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Full Term (37 weeks)
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Due Date (40 weeks)
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Possible Birth Range
Earliest (37 weeks)
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Latest (42 weeks)
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Pregnancy Timeline
The Three Trimesters:
- First Trimester (Weeks 1-12): Major organ development, morning sickness common
- Second Trimester (Weeks 13-26): Baby grows rapidly, movement felt, energy returns
- Third Trimester (Weeks 27-40): Baby gains weight, prepares for birth
Important Milestones:
- Week 6: Heartbeat detectable
- Week 12: End of first trimester, reduced miscarriage risk
- Week 20: Anatomy scan, often can determine sex
- Week 24: Viability milestone
- Week 37: Full term begins
- Week 40: Estimated due date
About Due Date Accuracy:
- Only about 5% of babies arrive on their due date
- Most babies arrive between 38-42 weeks
- First babies often arrive late
- Ultrasound dating is most accurate in first trimester