Pregnancy Due Date Calculator

Use our Pregnancy Due Date Calculator to estimate your expected delivery date (EDD) quickly and easily. Simply enter the first day of your last menstrual period (LMP), and let our calculator do the rest!

Pregnancy Due Date Calculator

Share this helpful tool with your friends to help them track their pregnancy journey too.

How Does the Pregnancy Due Date Calculator Work?

The Pregnancy Due Date Calculator provides an estimated due date based on the first day of your last menstrual period.

Pregnancy typically lasts about 40 weeks (or 280 days) from the first day of your LMP. While this date is an approximation, it gives you a general idea of when to expect your baby.

Remember, every pregnancy is unique, so it’s always best to consult your OBGYN for personalized care and to ensure a healthy, problem-free pregnancy.

How to calculate pregnancy due date manually ?

Naegele’s Rule: The Most Common Way!

The most common method for estimating your pregnancy due date is Naegele’s Rule.

This rule assumes a 28-day menstrual cycle and a 40-week pregnancy. Here’s how it works:

Identify the first day of your last menstrual period (LMP).
Add one year to that date.
Subtract three months.
Add seven days.

The result is your estimated due date (EDD). For example:

– First day of LMP: March 1, 2024

– Add one year: March 1, 2025

– Subtract three months: December 1, 2024

– Add seven days: December 8, 2024

– Estimated Due Date: December 8, 2024

Ultrasound: The Most Accurate Way

While the Pregnancy Due Date Calculator and Naegele’s Rule provide helpful estimates, an ultrasound is the most accurate way to determine your due date.

Ultrasounds measure the baby’s growth during the early stages of pregnancy, offering a more precise calculation of your due date and the current week of pregnancy

Understanding the Trimesters of Pregnancy

Pregnancy is divided into three trimesters, each with its own milestones and developmental changes.

First Trimester (Weeks 1–13)

The first trimester begins on the first day of your last menstrual period and ends at week 13.

This is a critical time for fetal development, and your doctor may recommend specific tests to ensure both your health and the baby’s well-being.

Second Trimester (Weeks 14–28)

The second trimester is often called the “golden period” of pregnancy.

During this time, the baby’s nervous system, bones, and muscles develop rapidly.

Many women feel more energetic during this phase, but regular check-ups are still essential to monitor the baby’s growth and ensure everything is on track.

Third Trimester (Weeks 29–40)

The third trimester is the final stretch of your pregnancy journey.

Your baby grows significantly during this time, and you may experience symptoms like back pain, heartburn, and swelling.

Your doctor will closely monitor the baby’s position, placental function, and your overall health to prepare for a safe delivery.

Why Regular Prenatal Care is Important ?

Regular visits to your OBGYN are crucial throughout your pregnancy. These appointments help track your baby’s development, address any concerns, and ensure you’re prepared for delivery.