Calculate gestational age from ultrasound measurements, LMP, or conception date. Compare gestational age vs. menstrual age.
Enter your values below
Enter your last menstrual period date.
Or enter your known conception date.
Enter the gestational age from your ultrasound report.
How this calculator works
Gestational age is measured from conception (2 weeks less than menstrual age calculated from LMP).
Common questions about this calculator
These calculators are for informational purposes only. While we strive for accuracy, results should not be used as the sole basis for important decisions.
