To estimate the length of your pregnancy, enter the first day of your last period and then press 'calculate'.

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

 

The pregnancy calculator above provides an estimation of weeks from reported first day of your last normal menstrual period (LMP) and does not constitute medical advice. A missed period does not necessarily mean that you are pregnant, and having a period does not mean you are not pregnant. Only an exam, pregnancy test, or ultrasound by a physician can confirm pregnancy and approximate length of pregnancy. The calculator should be used as a guide only and should not be relied upon for weeks of pregnancy, conception date, or due date.