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Gestational Age Calculator

Gestational age, also known as Age of Gestation (AOG), is the number of weeks a pregnancy has progressed since the first day of the last menstrual period (LMP). This calculator estimates how far along you are in your pregnancy by using your LMP and average cycle length. It’s an essential tool for tracking fetal development and expected due dates.

Estimate Pregnancy Age by Last Menstrual Period

Input Fields

Gestational Age Calculation Formula

Formula
$$\text{Gestational Age (weeks)} = \frac{\text{Current Date} – \text{LMP}}{7}$$

Gestational age is calculated as the number of days since the first day of the last menstrual period divided by 7 to convert into weeks. Adjustments may be made based on cycle length if it differs significantly from the average (28 days).

Gestational age is a key measurement in prenatal care. It typically ranges from 38 to 42 weeks, with anything under 37 weeks considered premature. This calculator estimates the age of your pregnancy in weeks and days, based on your last menstrual period (LMP). It helps expectant mothers and healthcare providers track fetal growth, schedule ultrasounds, and plan for the due date. This tool is especially useful in early pregnancy or when tracking development milestones.

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One thought on “Gestational Age Calculator

  1. sitrayas says:

    Excuse me, does this tool have support for the Spanish language? Is there how to modify it?