Due Date Calculator

Select First day of Last Period
DUE DATE
Probable date of ovulation
Beginning of second trimester
Beginning of third trimester

Whether you are trying to conceive or suspect you may be pregnant, this calculator will estimate the dates you'll want to know. Simply enter the first day of your last period. The calculator will show you your estimated date of ovulation and the expected due date of your baby.

Keep in mind that this is an estimate. As soon as you think you're pregnant, it's important that you contact your physician or other health-care professional immediately.

Trying to conceive? To maximize your chances of conception, it's important to determine the day of your monthly ovulation (when the ovary releases an egg). Track your ovulation cycle easily with the Ovulation Calculator .

Do you suspect that you're already pregnant? Find out everything you need to know , from the common signs of pregnancy to how to prepare for the next nine months -- and be sure to set up your personalized Pregnancy Calendar so you can track your pregnancy day by day.