Pregnancy Calculator – Accurate Due Date & Gestational Age

Use our Pregnancy Calculator to accurately estimate your baby's due date and track your gestational age. Simply enter your Last Menstrual Period (LMP), conception date, IVF transfer date, or ultrasound information, and get a reliable prediction for your pregnancy timeline. This tool is designed to help expectant parents plan and monitor their pregnancy journey with ease.

Pregnancy Details

Pregnancy completed Progress

How Does the Pregnancy Calculator Work?

Our Pregnancy Due Date Calculator uses standard medical formulas to estimate your baby's delivery date based on your input data. Most commonly, it starts from the first day of your last menstrual period (LMP), but it can also use conception dates, IVF transfer, or ultrasound measurements for greater accuracy.

Calculating Your Estimated Due Date

Your estimated due date (EDD) represents the approximate day your baby is expected to arrive, typically around 40 weeks from the start of your last period. Using our tool, you can select the method that best reflects your pregnancy tracking data.

Understanding Gestational Age and Trimesters

Gestational age is the number of weeks and days since the beginning of your last menstrual period. Our calculator also determines which trimester you are in and tracks your pregnancy progress so you can monitor your journey week by week.

Why Track Your Pregnancy Progress?

Tracking your pregnancy helps you plan prenatal visits, monitor fetal development, and prepare for childbirth. It also helps you understand your current stage of pregnancy and adjust lifestyle choices for a healthy journey.

Can I Update My Due Date?

Yes, your due date may change as your pregnancy progresses, especially if new information is available from ultrasounds or medical examinations. Our calculator allows you to recalculate easily whenever new data is entered.

Pregnancy Calculator FAQs

What is a Pregnancy Calculator?

A Pregnancy Calculator estimates your baby's due date and gestational age based on your last menstrual period (LMP), conception date, IVF transfer date, or ultrasound measurements.

How accurate is the Pregnancy Calculator?

The calculator provides an estimate based on standard medical formulas. While highly reliable, actual delivery dates may vary. Ultrasound data can increase accuracy.

Can I use the calculator if I had IVF?

Yes! Select the "IVF Transfer Date" option and input the embryo day to get an accurate estimated due date and gestational age.

Can I recalculate my due date?

Absolutely. As your pregnancy progresses and new information like ultrasounds becomes available, you can recalculate your due date for updated estimates.

What is gestational age?

Gestational age is the number of weeks and days since the first day of your last menstrual period. It helps track fetal development and pregnancy progress.

How does the calculator determine trimesters?

The calculator divides your pregnancy into three trimesters: First (weeks 1–12), Second (weeks 13–26), and Third (weeks 27–40), showing your current stage and progress.

InCalculator.com was launched in 2020 with the goal of providing fast and accurate online calculators. However, the journey of calculators began in the 17th century, when inventors designed mechanical machines to simplify complex mathematical tasks.