August 15, 2023 5:55 AM EDT
Pregnancy due date calculators are grounded in the principle that pregnancy lasts about 40 weeks, calculated from the first day of your last menstrual period (LMP). This estimation assumes a standardized 28-day menstrual cycle and ovulation occurring around day 14. Best Pregnancy Calculator While this method provides a baseline, it's important to note that variations in menstrual cycle length and ovulation can impact the accuracy of the calculation.