Fetal Age Calculator
Calculate your fetal gestational age, estimated due date (EDD), and current trimester based on your last menstrual period (LMP).
ð How It Works
This calculator estimates your fetal gestational age based on the first day of your Last Menstrual Period (LMP). Pregnancy is counted from the first day of your LMP, which is usually about two weeks before conception. The average pregnancy lasts 280 days (40 weeks) from LMP.
- Gestational Age â The age of your pregnancy measured in weeks and days from LMP
- Estimated Due Date (EDD) â Calculated as LMP + 280 days (40 weeks)
- Trimester â Pregnancy is divided into three trimesters of approximately 13-14 weeks each
- Conception Date â Estimated as LMP + 14 days (ovulation window)
â Why It Matters
ð Prenatal Care
Knowing your exact gestational age helps schedule important prenatal screenings and tests at the right time during pregnancy.
ðŊ Accurate Due Date
Your EDD helps you plan for maternity leave, prepare the nursery, and ensure you receive proper care throughout your pregnancy journey.
ð Baby's Development
Tracking fetal age lets you follow your baby's weekly development milestones, from heartbeat to first movements to full-term readiness.