Medical Disclaimer

These calculators are provided for educational and informational purposes only. They are not medical advice, diagnosis, or treatment. Results are estimates and may not apply to every person. Do not use calculator results to start, stop, or change medication or treatment. Consult a qualified healthcare professional for personal medical advice.

3 Liver Tools

Liver Health Calculators

Educational tools for liver health assessment. Not diagnostic — clearly labeled as risk indicators only.

AST/ALT Ratio Calculator

Calculate AST divided by ALT. Ratio > 1 may suggest alcoholic liver disease or cirrhosis; < 1 suggests viral hepatitis or NAFLD. Not diagnostic — pattern recognition only.

Calculate AST/ALT

FIB-4 Liver Fibrosis Index

Non-invasive liver fibrosis assessment: FIB-4 = (Age × AST) ÷ (Platelets × √ALT). < 1.45 low risk; 1.45-3.25 indeterminate; > 3.25 high risk of advanced fibrosis.

Calculate FIB-4 Validated Formula

Liver Test Unit Converter

Convert liver enzymes and bilirubin between units: AST/ALT (U/L ↔ µkat/L), bilirubin (mg/dL ↔ µmol/L), ALP/GGT (U/L ↔ µkat/L).

Convert Unit Conversion