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Due Date Calculator
Calculate your baby's expected due date and track important pregnancy milestones throughout your journey.
Calculate Due Date
The first day of your last period before pregnancy
Typical range is 21-35 days (average 28 days)
🤰 How Due Dates Work
Due dates are calculated as 280 days (40 weeks) from the first day of your last menstrual period. This is the standard method used by healthcare providers.
- • Only 5% of babies are born on their due date
- • Normal delivery range is 37-42 weeks
- • First-time mothers often deliver later
- • Ultrasound dating may be more accurate
📅 Pregnancy Trimesters
First Trimester: Weeks 1-12
Second Trimester: Weeks 13-28
Third Trimester: Weeks 29-40+
Each trimester brings unique developments and considerations for both mother and baby.
🏥 Important Appointments
- First prenatal visit (8-10 weeks)
- Nuchal translucency scan (11-13 weeks)
- Anatomy scan (18-22 weeks)
- Glucose screening (24-28 weeks)
- Group B strep test (35-37 weeks)
⚠️ Important Notes
- • This calculator provides estimates only
- • Ultrasound dating may be more accurate
- • Consult your healthcare provider regularly
- • Every pregnancy is unique
- • Due dates can change based on medical assessments
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