Count to Event

Pregnancy countdown calculator.

Enter your estimated due date to see a live countdown to baby’s arrival. A typical pregnancy is about 40 weeks (280 days) from the first day of the last menstrual period — your doctor’s estimated due date already accounts for this.

Frequently asked questions

How is a due date calculated?

Due dates are typically estimated as 280 days (40 weeks) from the first day of the last menstrual period, or measured via ultrasound. Enter the due date your provider gave you for the most accurate countdown.

Will the baby arrive exactly on the due date?

Only about 1 in 20 babies arrives on the exact due date — most arrive within two weeks either side. Treat the countdown as an estimate, not a promise!