Gestational Age Calculator
Calculate gestational age from last menstrual period (LMP) or conception date. View current trimester, due date, pregnancy progress, and fetal development milestones.
Enter LMP or conception date to calculate gestational age.
About Gestational Age
Gestational age is typically measured from the first day of the last menstrual period (LMP). A normal pregnancy lasts about 40 weeks (280 days) from LMP.
- Calculate from LMP or conception date
- Trimester and progress tracking
- Key developmental milestones
- This is for informational purposes only
Disclaimer:This tool is provided “as is” for informational and educational purposes only. Results may not be 100% accurate. ToolBird makes no warranties, express or implied, regarding the accuracy, reliability, or completeness of any output generated by this tool. This tool does not constitute professional, legal, financial, medical, or tax advice. Always consult a qualified professional for important decisions. By using this tool, you agree that ToolBird and its operators shall not be held liable for any damages, losses, or consequences arising from the use of this tool or reliance on its results. All processing occurs in your browser — we do not store, transmit, or access your data. Use at your own risk.