Enter Your Details
Uses Naegele's rule (adjusted for cycle length)
Select a date to estimate your due date.
About Due Date Calculator
A due date calculator estimates your baby’s expected arrival using Naegele’s rule from LMP or conception date, adjusted for cycle length.
Only about 5% of babies arrive on the exact due date. A window of ±2 weeks around the estimate is common.
Quick tips
- Confirm dates with your prenatal provider
- Track symptoms and appointments separately
- Update estimates after ultrasound dating if advised