Pregnancy Calculator Pregnancy Calculator Choose calculation method Due Date Last Period Ultrasound Conception Date IVF Transfer Date Enter your due date: Enter the start date of your last period: Enter the date of your ultrasound: Enter the date of conception: Enter your IVF transfer date: Calculate Current pregnancy week: WEEK Days passed: DAYS Weeks and days remaining: week(s) + day(s) Estimated Due Date is: Tips for the current week: Calculate Again