Pregnancy Due Date Calculator
An estimate using Naegele's rule — the standard 280-day estimate from the first day of the last period. Your care provider's estimate (especially after an ultrasound) is more accurate for your individual pregnancy.
—Estimated due date
—Weeks pregnant (as of today)
How it works
Applies Naegele's rule: 280 days from the first day of the last period. An ultrasound-based estimate from your care provider is more accurate for any individual pregnancy.