1. What is Gestational Age?

Gestational age is a measure of the age of a pregnancy from the woman's last menstrual period (LMP). It is typically measured in weeks and is used to track pregnancy progress and fetal development.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Current date — Today's date or any specified date
• LMP date — First day of the last menstrual period
• 7 — Number of days in a week

Explanation: The calculation counts the number of days between the current date and LMP date, then divides by 7 to convert to weeks.

3. Importance of Gestational Age Calculation

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

4. Using the Calculator

Tips: Enter the first day of your last menstrual period and the current date (or any date you want to calculate for). The calculator will determine how many weeks pregnant you are as of that date.

5. Frequently Asked Questions (FAQ)

Q1: What if I don't know my LMP date?
A: If you don't know your LMP date, an ultrasound in early pregnancy can help estimate gestational age.

Q2: Is this calculation accurate for all pregnancies?
A: This calculation assumes a regular 28-day menstrual cycle. Variations in cycle length may affect accuracy.

Q3: How does this differ from fetal age?
A: Gestational age is about 2 weeks more than fetal age, as it counts from LMP rather than conception.

Q4: What if my cycle isn't 28 days?
A: For cycles longer or shorter than 28 days, adjustments may be needed. Consult your healthcare provider.

Q5: When should I see a doctor?
A: You should schedule your first prenatal visit as soon as you know you're pregnant, typically around 8 weeks gestational age.