Due Date Calculator

Calculate your estimated due date based on your last menstrual period

Enter the first day of your last menstrual period to calculate your due date.
Pregnancy Trimesters
  • First Trimester: Weeks 1-12
  • Second Trimester: Weeks 13-27
  • Third Trimester: Weeks 28-40
Other Calculators
Pregnancy Week Calculator BMI Calculator Weight Gain Tracker