Pregnancy Due Date Calculator
This calculator helps expectant mothers determine their baby’s due date — also known as the Estimated Date of Delivery (EDD). By entering the first day of your last menstrual period (LMP), you’ll get an accurate estimate of your 40-week pregnancy timeline.
Estimate Your Baby’s Expected Delivery Date
Due Date Estimation Formula
Gestational age is counted from the first day of the last menstrual period, assuming ovulation around day 14 of the cycle. This is the standard formula used in clinical obstetrics.
Pregnancy typically lasts about 40 weeks from the start of the last menstrual period (LMP). This calculator provides a reliable estimate of when your baby is likely to be born. Knowing your due date helps with prenatal planning, checkups, and monitoring fetal development. The tool is especially useful in early pregnancy and is based on well-established medical guidelines.