Health

Amniotic Fluid Index (AFI) Calculator

Sum four-quadrant measurements to assess amniotic fluid volume.

Upper Right Quadrant (cm)

Upper Left Quadrant (cm)

Lower Right Quadrant (cm)

Lower Left Quadrant (cm)

AFI—

Interpretation—

AFI = Q1 + Q2 + Q3 + Q4 (in cm)
Oligohydramnios: <5 cm | Low-normal: 5-8 | Normal: 8-18 | Borderline: 18-24 | Polyhydramnios: >24 cm