Pregnancy Calculator

Last Menstrual Period:
Estimated Length of Pregnancy:
Estimated Conception Date:
Estimated Due Date:

This Pregnancy Calculator estimates the number of weeks since your last normal menstrual period. If you missed a period, you are not necessarily pregnant; having a period does not mean you are not pregnant. Pregnancy can only be confirmed by an exam, pregnancy test, or ultrasound by physician. This calculator is meant to be used as a guide only and should not be relied upon for weeks of pregnancy, conception date, or due date. This estimate does not constitute medical advice.