Pregnancy is conventionally dated from the first day of your last menstrual period (LMP), with a typical duration of 40 weeks (280 days). Enter your LMP — or conception date if you know it — to see your estimated due date, how far along you are, and your trimester milestones.
About this tool
Remember: Only about 4–5% of babies arrive on their exact due date; most arrive within two weeks either side. Your midwife or doctor may adjust the date after an early ultrasound, which is the most accurate dating method. This tool is informational and never replaces prenatal care.
This tool is for general information and screening purposes only. It is not medical advice and cannot diagnose any condition. Always consult a qualified healthcare professional about your health.