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Gestational Age Calculator

Estimate gestational age from your last menstrual period. See weeks and days, trimester, percent complete, and the estimated due date from one date check.

This calculator provides a general estimate only and is not medical advice. For personal health decisions, speak with a qualified healthcare professional. If you have bleeding, pain, uncertain dates, fertility-treatment dating, or questions about prenatal testing or delivery timing, use your clinician's guidance rather than this estimate alone.

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