Pregnancy Calculator

Our Pregnancy Calculator offers an easy, accurate, and reliable way to estimate your due date and understand each stage of your pregnancy. This calculator is based on traditional medical formulas and accounts for key milestones, allowing you to track your pregnancy week by week.

Whether you're newly pregnant or planning a pregnancy, our tool provides essential insights to help you navigate each trimester, prepare for doctor visits, and keep up with the growth and development of your baby.

How Does the Pregnancy Calculator Work?

The Pregnancy Calculator uses the date of your last menstrual period (LMP) and the average length of your menstrual cycle to estimate your due date. This tool calculates your pregnancy duration and milestones based on a 40-week cycle, which is the standard length of human pregnancy.

Formula:

To calculate the estimated due date (EDD), our calculator applies the following standard formula:

Using the Pregnancy Calculator

1. Enter the First Day of Your Last Menstrual Period (LMP): This is the starting point for the calculator to count the pregnancy weeks accurately.
2. Enter Your Average Menstrual Cycle Length: The standard cycle is considered 28 days, but you can adjust this if your cycle is longer or shorter.
3. Click “Calculate”: Our calculator will then estimate your due date and provide a week-by-week breakdown of your pregnancy timeline.

Pregnancy Milestones by Trimester

First Trimester (Weeks 1–12)

• Weeks 1-4: Ovulation and conception occur. The fertilized egg implants in the uterine wall.
• Weeks 5-8: Heartbeat can be detected, and the embryo begins to form its basic structures.
• Weeks 9-12: Limbs, organs, and brain structures are developing rapidly. By the end of the first trimester, the fetus has distinct human features.

Second Trimester (Weeks 13–26)

• Weeks 13-16: The fetus begins moving, although it may not be felt yet.
• Weeks 17-20: You may start feeling fetal movements; an ultrasound can confirm fetal sex.
• Weeks 21-24: Important screenings, like glucose testing, are typically performed.

Third Trimester (Weeks 27–40)

• Weeks 27-32: Fetal brain development accelerates; eyes open and close.
• Weeks 33-36: Your body prepares for labor; fetal movements may feel stronger.
• Weeks 37-40: The baby reaches full-term and can arrive anytime.

Example Calculation

Let’s assume:

• Last Menstrual Period (LMP): January 1, 2024
• Average Menstrual Cycle Length: 28 days

Frequently Asked Questions (FAQs)