Expecting parents often want to know their estimated due date as soon as possible to plan for the months ahead. This pregnancy due date calculator estimates your due date based on the first day of your last menstrual period, using the standard 40-week (280-day) gestational calculation used by healthcare providers. It also shows which trimester you're currently in and how many weeks pregnant you are, helping you track key pregnancy milestones. While this calculator provides a helpful estimate, only about 5% of babies are born exactly on their due date, so always follow up with your healthcare provider for personalized prenatal care and more precise dating via ultrasound.