Pregnancy Due Date Calculator
Calculate your estimated due date instantly using Naegele's rule. Enter the first day of your last menstrual period to see your due date, current pregnancy week, trimester, and key milestones β 100% free and private.
Frequently Asked Questions
A pregnancy due date calculator estimates when your baby will be born based on the first day of your last menstrual period (LMP). It uses Naegele's rule, adding 280 days (40 weeks) to your LMP date to determine the estimated due date.
The due date is an estimate β only about 5% of babies are born on their exact due date. Most births occur within 2 weeks before or after the estimated date. Your healthcare provider may adjust the date based on ultrasound measurements.
Naegele's rule is the standard method used by healthcare professionals to estimate a due date. It calculates the due date by adding 280 days (40 weeks) to the first day of the last menstrual period, assuming a regular 28-day cycle.
Yes, VUREX Pregnancy Due Date Calculator is completely free with no registration required. All calculations happen in your browser β your data is never sent to any server.