Amniotic Fluid Index Calculator
Evaluate amniotic fluid volume (AFI) based on ultrasound pocket measurements to screen for oligohydramnios or polyhydramnios.
Input Parameters
Enter details for calculation.
Amniotic Fluid Index
Expert Tip
AFI < 5cm indicates oligohydramnios (low fluid). AFI > 24cm indicates polyhydramnios (excess fluid).
Calculation Methodology & Details
Formula
Sums the deepest vertical pockets of amniotic fluid measured in each of the four quadrants of the uterus.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How AFI is Calculated
Follow these steps to use this calculator:
Enter Quadrant Values
Input pocket depths in centimeters from the ultrasound report.
Read Index
Check index rating (Low, Normal, High).
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ℹ️ About this Calculation
This obstetrics and gynecology calculator provides accurate gestational dating, fetal biometry estimations, risk stratification, and maternal health tracking based on ACOG guidelines and clinical ultrasonography standards.
Variable Glossary
Clinical Parameters
Last menstrual period (LMP), ultrasound biometric measurements (CRL, BPD, AC, FL), or lab hCG levels.
Obstetric Metrics
Estimated due date (EDD), gestational age in weeks/days, fetal growth percentiles, and risk scores.
How to Calculate Step-by-Step
Step 1
Enter your last menstrual period (LMP) date or ultrasound biometry values.
Step 2
Select cycle length parameters or maternal clinical characteristics if required.
Step 3
Review calculated due date timeline, milestone projections, or risk scores immediately.