Due Date Calculator
Expecting? Here’s a helpful tool to help you figure out when your baby arrives!
This is a best guess based on the date of your last period. Your doctor will give a better estimate of your baby’s gestational age at your “dating” ultrasound at 11-14 weeks of pregnancy.¹ It’s very common for babies to miss their estimated date of arrival – only ~5% of moms give birth on their due date.²
Knowing an approximate date can help you prepare for birth and getting everything ready for the new addition to your family.
What was the first day of your last period?
¹ Society of Obstetricians and Gynaecologists of Canada. Your pregnancy: routine tests. Accessed January 2025. https://www.pregnancyinfo.ca/your-pregnancy/routine-tests/ultrasound/#:~:text=The%20Society%20of%20Obstetricians%20and,these%20two%20types%20of%20ultrasounds
² Association of Ontario Midwives. When your pregnancy goes past your due date. https://www.ontariomidwives.ca/sites/default/files/2017-07/Postdates-pregnancy-English.pdf