Baby About Pregnancy Due Date Calculator
Calculate your estimated due date and track your pregnancy milestones
Estimated Due Date
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Current Pregnancy Week
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Conception Date
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End of First Trimester
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Start
End of 1st Trimester
End of 2nd Trimester
Due Date
How Your Due Date Is Calculated
This calculator uses the standard pregnancy calculation method:
- Pregnancy duration is typically 280 days (40 weeks) from the first day of your last period
- Conception date is estimated as approximately 14 days after the first day of your last period
- Trimesters are calculated as 1-12 weeks (first), 13-27 weeks (second), and 28-40 weeks (third)
- Only about 5% of babies are born on their exact due date
For the most accurate dating, consult with your healthcare provider who may use ultrasound measurements.
Comprehensive Pregnancy Guide
First Trimester (1-12 weeks)
Key developments and what to expect:
- Week 4: Neural tube begins forming
- Week 6: Heart begins beating
- Week 8: All major organs begin forming
- Week 10: Embryo becomes a fetus
- Week 12: Risk of miscarriage drops significantly
Second Trimester (13-27 weeks)
The "golden period" of pregnancy:
- Week 16: Can often learn baby's gender
- Week 20: Anatomy scan performed
- Week 24: Baby is viable outside womb
- Week 26: Baby responds to sound
- Week 27: Baby opens eyes for first time
Third Trimester (28-40 weeks)
Preparing for baby's arrival:
- Week 28: Baby can dream during REM sleep
- Week 32: Baby practices breathing
- Week 36: Baby drops into birth position
- Week 38: Lungs are fully developed
- Week 40: Your due date arrives!
Prenatal Care Tips
Important steps for a healthy pregnancy:
- Schedule your first prenatal visit by 8 weeks
- Eat 300-500 extra calories daily in 2nd/3rd trimesters
- Stay hydrated - drink at least 8 glasses of water daily
- Exercise moderately (with doctor's approval)
- Monitor for concerning symptoms like bleeding or reduced movement