Pregnancy Calculator

Estimated Fertility Window
Estimated Conception Date
Estimated Gestational Age
Estimated Due Date
This is not a diagnosis. The calculations that are provided are estimates based on averages.

Pregnancy Calculator Instructions
  1. Enter the first day of your last menstrual period.
  2. Then enter the average length of your ovulation cycle.
  3. Click the orange "Get The Date!" button to view the results.
  4. Review information below pregnancy calculator for next steps.
Pregnancy Due Date Information
If you are trying to get pregnant, you should get a copy of the Essential Guide to Getting Pregnant. Also check out our Fertility Shop.