Due Date Calculator

Estimate your baby's due date based on the first day of your last menstrual period.

Your Estimated Due Date

Estimated Due Date N/A

How the Due Date Calculator Works

Our Due Date Calculator estimates your baby's due date based on the first day of your last menstrual period.

How This Calculator Determines Your Due Date

  1. Input Your Last Period Date: Enter the first day of your last menstrual period.
  2. Due Date Calculation: The calculator adds 280 days (40 weeks) to the first day of your last period to estimate your due date.