Baby Due Date Calculator
Estimate when your little one will arrive based on your last menstrual period or conception date.
How is the due date calculated?
From Last Menstrual Period (LMP): The due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period. This is known as Naegele's rule.
From Conception Date: If you know your conception date, the due date is calculated by adding 266 days (38 weeks) from that date.
Note: This calculator provides an estimate only. Only about 5% of babies are born on their exact due date. Most babies arrive within two weeks before or after the estimated date. Always consult with your healthcare provider for personalized guidance.