FIB-4 Calculator

Free calculate FIB-4 score for liver fibrosis. This is an educational tool only - always consult a healthcare provider.

Laboratory Values

Results

Enter lab values to calculate FIB-4 score

About FIB-4

  • • Formula: (Age × AST) / (Platelets × √ALT)
  • • <1.45: Low risk (F0-F1)
  • • 1.45-3.25: Intermediate risk (F2-F3)
  • • >3.25: High risk (F3-F4)