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 uses the reported last normal menstrual period (LMP). Because of that, it is ONLY an estimate of weeks of pregnancy (gestation). A computerized calculation does not constitute medical advice. Missing a period does not necessarily, mean that you are pregnant. 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.