Melt Flow Index Interpretation Calculator

Interpret MFI test results to determine shear rate, apparent viscosity, molecular weight distribution breadth, and recommended processing method.

MFI at standard load (g/10 min)

MFI at high load (g/10 min)

Melt density (g/cm³)

Standard test load (kg)

Die diameter (mm)

Tab to move between fields

Wall shear rate (1/s)

19.43

Apparent viscosity (Pa·s)

996.1

Wall shear stress (Pa)19,358.67

Flow Rate Ratio (FRR)10

MWD breadth (1-4)1

Processability score (1-10)8

Process code3

Vol. flow rate (cm³/s)0.02

How to Use This Calculator

Enter MFI at standard load (g/10 min), MFI at high load (g/10 min), and Melt density (g/cm³).
Set Standard test load (kg) and Die diameter (mm).
Review Wall shear rate (1/s) and Apparent viscosity (Pa·s).
Use Wall shear stress (Pa) and Flow Rate Ratio (FRR) to inform your decision.

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