Gestational Age Calculator
Calculate gestational age from the last menstrual period.
Informational tool only. For medical, pregnancy, financial or regulatory decisions, verify important results with a qualified professional.
Gestational Age Calculator
Free · No sign-up · Browser-basedHow does Gestational Age Calculator work?
Calculate gestational age from the last menstrual period. Enter the requested information and select Calculate to receive an instant result.
How to use
Complete the fields, click Calculate, review the result and use Reset to start over.
Related calculators
Age Calculator · Age Difference · Birthday Calculator · Time Between Dates
Frequently Asked Questions
Is Gestational Age Calculator free?
Yes. It is designed to run in the browser without a paid API or account.
Does it work on mobile?
Yes. The layout is responsive for desktop, tablet and mobile.
Are results professional advice?
No. Some tools are informational estimates and should not replace professional advice.