Calculate your baby's estimated due date based on your last menstrual period or conception date. Get accurate pregnancy timeline information instantly.
This is the most accurate method for calculating due dates
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.
If you know your conception date, we add 266 days (38 weeks) to calculate your due date.
Early ultrasounds (before 20 weeks) can provide the most accurate due dates, especially if your cycles are irregular.
Due dates are estimates - your baby may arrive 2 weeks before or after
First-time mothers often deliver after their due date
Your healthcare provider may adjust your due date based on ultrasound measurements
Always consult with your healthcare provider for personalized care
