Pregnancy Due Date and Week Calculator
Enter the first day of your last period for the due date and current week.
Estimated due date08.06.2027
Pregnancy weeks9
Extra days3
How it is calculated
Due date = last period + 280 days (Naegele’s rule). Not medical advice.
Worked example
| Estimated due date | 08.10.2026 |
| Pregnancy weeks | 14 |
| Extra days | 0 |
FAQ
Is the date exact?
Most babies arrive weeks before or after it.
Are the results exact?
Results are estimates for information only; check official sources for binding figures.