Estimate your baby’s arrival with ease.
Welcome to our Pregnancy Due Date Calculator! Whether you’re using your last menstrual period (LMP), an ultrasound, conception date, or IVF transfer, this tool provides an estimated due date, week-by-week progress, and a countdown to your big day. Stay informed and excited about your pregnancy milestones!
Your due date, or estimated date of delivery, is a helpful guide for when your baby might arrive. Only about 4% of babies are born exactly on this date, so think of it as a midpoint within a 37-42 week range.
LMP: Adds 280 days (40 weeks) from your last menstrual period, adjusting for cycle length. It’s the most common method.
Ultrasound: Measures fetal size to estimate due date, often more accurate early in pregnancy.
Conception Date: Adds 266 days from conception, ideal if you know the exact date.
IVF: Uses the transfer date plus embryo age, offering precision for assisted pregnancies.
Pregnancies typically range from 37 (early term) to 42 weeks (late term), with 40 weeks as the standard full-term estimate. Preterm (before 37 weeks) or postterm (after 42 weeks) births may require medical attention.
Every pregnancy is unique—health, lifestyle, and past pregnancies can shift timelines. Regular check-ups ensure you’re on track!
It’s an estimate—only 4% of babies arrive exactly on time. Most are born within a 5-week window (37-42 weeks).
Yes, IVF uses the transfer date and embryo age for a more exact estimate. Select "IVF Transfer Date" to use this method.
Enter your average cycle length for LMP. The calculator adjusts accordingly.
No, this is a tool for guidance. Always follow your healthcare provider’s advice.
Built by xAI, this Pregnancy Due Date Calculator blends medical guidelines with user-friendly design. It’s here to help you plan and celebrate your pregnancy journey. For personalized insights, consult your doctor.