BabyTracker
Advanced Pregnancy Calculator
Track your pregnancy journey with accurate due date estimation, fetal development stages, and weekly milestones.
Pregnancy Calculator
Your Pregnancy Results
Your Pregnancy Week by Week
Track your baby's development and bodily changes throughout your pregnancy journey
Week 1-4: Early Development
During these initial weeks, your baby is developing the foundational structures for all body systems. The placenta begins to form, and the neural tube (which becomes the brain and spinal cord) starts developing.
Why Use Our Pregnancy Calculator?
Our advanced tool provides accurate pregnancy tracking and valuable insights to help you through your journey
Accurate Due Date
Get precise due date estimation based on multiple calculation methods.
Weekly Development
Track your baby's development week by week with detailed information.
Mobile Friendly
Access our calculator from any device, anywhere, at any time.
Frequently Asked Questions
Find answers to common questions about pregnancy and our calculator
Your due date is typically calculated based on the first day of your last menstrual period (LMP), adding 280 days (40 weeks). This method assumes a 28-day cycle with ovulation on day 14. If your cycle length is different, the calculation may be adjusted.
Our calculator provides a medically accepted estimation of your due date. However, only about 5% of babies are born on their exact due date. Most births occur within two weeks before or after the estimated date.
If you're unsure about your LMP, you can use the conception date if known, or an early ultrasound date. Early ultrasounds (before 14 weeks) provide the most accurate dating for pregnancy.
Pregnancy is divided into three trimesters: First trimester (week 1 to week 12), Second trimester (week 13 to week 26), and Third trimester (week 27 to birth). Each trimester has distinct developmental milestones and maternal changes.
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