Fetal Growth Calculator
Track your baby’s growth percentiles and estimated weight during pregnancy. Calculate fetal development based on gestational age, ultrasound measurements, and maternal factors.
Step 1: Pregnancy Details
Understanding Gestational Age
Gestational age is measured from the first day of your last menstrual period (LMP). A full-term pregnancy is typically 40 weeks. This calculator provides estimates based on population averages.
Step 2: Ultrasound Measurements
About Ultrasound Measurements
Ultrasound measurements help estimate fetal weight and growth. BPD measures head width, HC measures head circumference, AC measures abdominal size, and FL measures thigh bone length. These are typically taken during routine prenatal scans.
Fetal Growth Results
Estimated Fetal Weight
Fetal Growth Percentiles
| Percentile | Estimated Weight | Head Circumference | Femur Length |
|---|
Understanding Percentiles
Growth percentiles compare your baby’s measurements to other babies at the same gestational age. The 50th percentile is average. Percentiles between 10th and 90th are typically considered normal.
Fetal Development Milestones
| Week | Development Milestone | Average Size | Key Developments |
|---|
About Fetal Development
Fetal development follows a predictable pattern. By 28 weeks, babies typically have fully formed eyes that can open and close, and they begin to develop more body fat. Brain development accelerates during the third trimester.
Need Professional Pregnancy Advice?
Always consult with your healthcare provider for personalized medical advice. This calculator provides estimates based on population averages and should not replace professional medical care.
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