Start planning for the big day with our accurate pregnancy due date calculator. Get personalized pregnancy timeline and important milestones.
Choose your preferred calculation method below
Understanding pregnancy due date calculations
The most common method adds 280 days (40 weeks) to the first day of your last menstrual period. This assumes a 28-day cycle with ovulation on day 14. We adjust for different cycle lengths.
If you know when conception occurred, we add 266 days (38 weeks) to estimate your due date. This method is more accurate for women who track ovulation or have irregular cycles.
For IVF pregnancies, we calculate based on the transfer date: Day 3 transfer + 263 days, or Day 5 transfer + 261 days for the most accurate results.
Track your baby's development week by week throughout your pregnancy journey
Your baby's heart starts beating around week 5-6. This tiny heartbeat can be detected via ultrasound, marking an exciting first milestone.
All major organs have formed. The risk of miscarriage drops significantly. Many parents choose to announce their pregnancy at this stage.
First movements (quickening) are felt, usually between 16-22 weeks. These gentle flutters soon become recognizable kicks and rolls.
Detailed mid-pregnancy ultrasound checks baby's development. Gender can often be revealed if parents wish to know.
Final stretch begins! Baby's brain develops rapidly, and they start to regulate their own body temperature.
Baby is fully developed and ready for birth. Most babies are born between 37-42 weeks. The big day is near!
Essential guidance for a healthy pregnancy journey for both mom and baby
Your complete guide to changes and developments in each pregnancy stage
Your Body: Morning sickness, fatigue, breast tenderness, and frequent urination are common.
Your Baby: All major organs form. By week 12, baby is about 2 inches long with a beating heart.
To Do: Start prenatal vitamins, schedule first doctor visit, and avoid harmful substances.
Your Body: Energy returns! Baby bump grows, and you'll feel first movements around week 18-22.
Your Baby: Rapid growth phase. Can hear sounds, make facial expressions, and develop sleep patterns.
To Do: Have anatomy scan, consider childbirth classes, and start thinking about baby names.
Your Body: Shortness of breath, back pain, and frequent bathroom trips. Baby's kicks become stronger.
Your Baby: Lungs mature, weight gain accelerates, and baby positions for birth. Fully developed by week 37.
To Do: Pack hospital bag, finalize birth plan, install car seat, and prepare nursery.
