Estimate your baby's delivery date based on your last menstrual period, conception date, ultrasound, or IVF transfer date. Track your pregnancy journey week by week.
📅
Last Period
Most common method
💕
Conception Date
If you know exact date
🔬
Ultrasound
Early scan dating
🧬
IVF Transfer
For IVF pregnancies
First Pregnancy?
💡 Conception typically occurs 14 days after LMP in a 28-day cycle
Estimated Due Date
--
Your baby is expected to arrive around this date
--
Current Week
--
Days Until
--
Trimester
--
Complete
👶
Your Baby is the Size of
--
--
Pregnancy Progress--
Week 1Week 13Week 27Week 40
✨ This Week's Milestones
📌 Key Dates
Conception Date--
First Trimester Ends--
Second Trimester Ends--
Viability (24 weeks)--
Full Term (39 weeks)--
📋 Complete Pregnancy Timeline
Export & Share
About Due Date Calculation
How It Works
Due dates are calculated using different methods depending on available information. The most common method adds 280 days (40 weeks) to the first day of your last menstrual period (LMP). For IVF pregnancies, we add 263 days for Day 3 embryos or 261 days for Day 5 blastocysts.
Only about 4% of babies are born on their exact due date. Most arrive within a week before or after this date.
Important Notes
This calculator provides estimates based on averages
Multiple pregnancies (twins, triplets) typically deliver earlier
Your healthcare provider may adjust dates based on ultrasound
Regular prenatal care is essential for monitoring your pregnancy
