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Due Date Calculator
Estimated Due Date
Nov 15, 2026
Current Week
Week 12
Trimester
First
Days Until Due
196 days
Progress
30%
Week 1 Week 13 Week 27 Week 40
1st Trimester 2nd Trimester 3rd Trimester
Key Milestones
2nd Trimester Starts
3rd Trimester Starts
Full Term (37 weeks)
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How to Use the Due Date Calculator
- Select calculation method (LMP or conception)
- Enter the relevant date
- View your estimated due date and current progress
- Track key milestones throughout pregnancy
Pregnancy Timeline
- Weeks 1-12 - First trimester, organ development
- Weeks 13-26 - Second trimester, rapid growth
- Weeks 27-40 - Third trimester, final development
- Week 37+ - Full term, baby is ready
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Frequently Asked Questions
How is the due date calculated?
Due date is typically 280 days (40 weeks) from the first day of your last menstrual period (LMP).
What are trimesters?
First trimester: weeks 1-12. Second trimester: weeks 13-26. Third trimester: weeks 27-40.
How accurate is a due date?
Only about 5% of babies are born on their due date. Most arrive within 2 weeks before or after.
Can the due date change?
Yes, ultrasound measurements may adjust the due date, especially in early pregnancy.