1. What is Estimated Gestational Age?

Estimated Gestational Age (EGA) is the time elapsed between the first day of the last menstrual period (LMP) and the current date, measured in weeks. It's a standard way to track pregnancy progression.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Current Date — Today's date or any date you want to calculate for
• LMP — First day of last menstrual period
• 7 — Days in a week

Explanation: The calculation counts the number of days between two dates and converts it to weeks by dividing by 7.

3. Importance of Gestational Age Calculation

Details: Accurate gestational age is crucial for prenatal care, determining due dates, scheduling tests, and assessing fetal growth and development.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period and the current date (or any date you want to check). The calculator will show the gestational age in weeks and days.

5. Frequently Asked Questions (FAQ)

Q1: What if I don't know my LMP?
A: If LMP is unknown, an ultrasound in early pregnancy can estimate gestational age based on fetal measurements.

Q2: Is this calculation accurate for all pregnancies?
A: This method assumes a regular 28-day cycle with ovulation on day 14. Variations may affect accuracy.

Q3: What's the difference between gestational age and fetal age?
A: Gestational age counts from LMP, while fetal age counts from conception (typically 2 weeks less).

Q4: How is this used in clinical practice?
A: Doctors use it to track pregnancy milestones, schedule tests, and determine if fetal growth is on track.

Q5: What if my cycles are irregular?
A: For irregular cycles, early ultrasound dating is more accurate than LMP-based calculation.