Pregnancy Calculator

First Day of Last Menstrual Period: Select Date
Estimated Length of Pregnancy:
Estimated Conception Date:
Estimated Due Date:


The Pregnancy Calculator below is an estimation of weeks from your reported last normal menstrual period and does not constitute medical advice. This calculator should be used as a “guide only” and should not be relied upon for weeks of pregnancy, conception date, or due date. At Knoxville Center for Reproductive Health we perform an in office ultrasound to obtain your length of pregnancy and our fees will be based on the results.