Fatty Liver Index Calculator

📊 Understanding the Fatty Liver Index (FLI)

The Fatty Liver Index (FLI) is a simple, non-invasive tool that helps estimate the likelihood of having non-alcoholic fatty liver disease (NAFLD). It was developed by Italian researchers as a cost-effective way to identify individuals at higher risk of liver fat accumulation without immediately requiring imaging tests or invasive procedures. The index has been validated in numerous studies and is widely used in both clinical and preventive health settings.

🧮 How is the FLI Calculated?

The FLI score ranges from 0 to 100 and is calculated using a logistic regression model that incorporates four measurable variables:

• 📏 Waist circumference (in cm)
• ⚖️ Body Mass Index (BMI) – you can quickly calculate this using our Advanced BMI Calculator
• 🩸 Triglyceride levels (mg/dL) – often checked during routine blood tests, and closely related to cardiovascular risk (check your heart risk here)
• 🧪 Gamma-Glutamyl Transferase (GGT) – a liver enzyme measured in U/L

These values are inserted into a validated equation that outputs the probability of having fatty liver. The closer the score is to 100, the higher the likelihood of fat accumulation in the liver.

📉 Interpreting FLI Results

The FLI is divided into three categories:

• ✅ FLI < 30 → Low probability of fatty liver
• ⚠️ FLI 30–59 → Intermediate probability; lifestyle changes are recommended
• 🚨 FLI ≥ 60 → High probability of fatty liver, clinical evaluation is suggested