Pregnancy Due Date Calculator
Calculate your estimated due date, current trimester, and week-by-week pregnancy milestones. Track fetal development stages and get key appointment reminders.
2 minutes Easy
How to Use This Calculator
- Select your calculation method (Last Menstrual Period, Conception Date, IVF Transfer, or Ultrasound)
- Enter the relevant date based on your chosen method
- Adjust cycle length if using the LMP method (default is 28 days)
- Optionally provide BMI category, pregnancy history, and multiples information
- Click Calculate Due Date to see your estimated delivery date, milestones, and timeline
- Share or bookmark your results - the URL automatically saves your inputs!
Calculation Method
Last Menstrual Period
days
Typical range is 21-35 days (default 28)
Additional Information (Optional)
For weight gain guidance
May affect some timelines
Multiples may have earlier delivery targets
📅 About Due Date Calculations
Your Estimated Date of Delivery (EDD) is calculated as 280 days (40 weeks) from the first day of your last menstrual period. Only about 5% of babies arrive on their exact due date. Most babies are born within a window of 37-42 weeks, with the majority arriving between 39-41 weeks.
🤰 Pregnancy Milestones
- Week 12: End of first trimester, risk of miscarriage drops significantly
- Weeks 16-20: Gender may be revealed; you may feel first movements
- Weeks 18-22: Anatomy scan (detailed ultrasound)
- Week 24: Viability milestone
- Week 28: Third trimester begins
- Week 37: Pregnancy is considered full term
- Week 40: Estimated due date
⚕️ Prenatal Care Schedule
- Weeks 4-28: Monthly appointments
- Weeks 28-36: Every 2 weeks
- Weeks 36-40: Weekly appointments
- First ultrasound: Usually weeks 8-12 (dating scan)
- Anatomy scan: Usually weeks 18-22
- Glucose screening: Usually weeks 24-28
- Group B strep test: Usually weeks 36-37
🔗 Save & Share Your Calculation
Your inputs are automatically saved in the URL. You can bookmark this page to save your calculation, or use the Share button to send it to others. When you return or share the link, all values will be restored automatically.
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