Due Date Calculator
Understanding Due Date Calculation
The due date is calculated using Naegele Rule: LMP + 280 days (40 weeks). This assumes a 28-day cycle.
Important Notes
- Only 5% of babies are born on their exact due date
- Full-term pregnancy is 37-42 weeks
- Your healthcare provider may adjust based on ultrasound
💡 Tips
- Due dates are estimates, not deadlines
- First pregnancies often go slightly longer
- Your doctor may adjust based on early ultrasound
- Track your cycle for more accurate calculations