Pregnancy due date
Natural Standard Monograph, Copyright 2011 ( Commercial distribution prohibited. This calculator is intended for informational purposes only, and should not be interpreted as specific medical advice. A qualified healthcare provider should be consulted before making decisions about therapies and/or health conditions.


First day of last period (mm/dd):
Average menstrual cycle length (days):
Estimated conception date:  
Estimated gestational age:  
Estimated due date: