Pregnancy Due Date Calculator
This free pregnancy due date calculator estimates estimated pregnancy due date using Naegele's rule, adding 280 days to the first day of the last menstrual period. It's a standard obstetric estimate; your provider may adjust it after an ultrasound.
Fill in the fields above with your own numbers to get an instant, personalized result. This tool is for general informational purposes and is not a substitute for professional medical advice.
Frequently Asked Questions
What formula does this pregnancy due date calculator use?
It uses Naegele's rule, adding 280 days to the first day of the last menstrual period to calculate estimated pregnancy due date.
Is this medically accurate?
This tool gives a standard estimate based on Naegele's rule. Individual results can vary, so treat it as a general guide rather than medical advice.