Due Date Calculator

What Is a Due Date Calculator?

A due date calculator estimates the date your baby is expected to be born. The most common method uses Naegele's rule, which adds 280 days (40 weeks) to the first day of your last menstrual period (LMP).

The due date is also called the estimated date of delivery (EDD). While it provides a helpful target, remember that a normal pregnancy can last anywhere from 37 to 42 weeks.

Calculation Methods

There are several ways to estimate your due date, and our calculator supports multiple approaches:

Your Pregnancy Timeline

Once you know your due date, you can plan your pregnancy journey. Key milestones include the first ultrasound (8–12 weeks), anatomy scan (18–22 weeks), glucose screening (24–28 weeks), and full-term status (37 weeks).

Your healthcare provider will schedule regular appointments throughout your pregnancy. These visits become more frequent as you approach your due date, typically weekly from week 36 onward.

Preparing for Your Due Date

• •Schedule your first prenatal appointment as early as possible
• •Take prenatal vitamins with folic acid and iron
• •Create a birth plan and discuss it with your healthcare provider
• •Prepare your hospital bag by week 36
• •Arrange childcare and time off work in advance
• •Set up the nursery and purchase essential baby items