Estimate your due date, track your weeks of pregnancy, and discover key milestones instantly.
Our pregnancy calculator is based on Naegele’s rule, which estimates your due date by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This provides an easy, reliable way to track your pregnancy progress and know what to expect at each stage.
Our calculators are designed with accuracy and ease-of-use in mind. Pair this with our Period & Ovulation Calculator for complete women’s health tracking.
✔️ It provides a reliable estimate using Naegele’s rule. Your doctor may refine this with an ultrasound.
📅 Yes, due dates may be adjusted after ultrasounds if fetal growth suggests a different timeline.
👶 Only about 5% of babies are born exactly on their due date. Most arrive within two weeks before or after.