Viscosity Index describes the rate of viscosity change as a function of
temperature, and is defined by ASTM D 2270. This method uses the
kinematic viscosity at 40C and 100C to determine VI. Use the following
calculators to determine fluid viscosity or VI. Fluids meeting the MEHF
performance definition will have a viscosity index that is greater than 150.

I want to calculate:

Viscosity Index (VI) – Input the fluid viscosity values at 40ºC and 100ºC, and click "Calculate"

Kinematic Viscosity @ 100ºC – Input the fluid VI and viscosity value at 40ºC, and click "Calculate"

Kinematic Viscosity @ 40ºC – Input the fluid VI and viscosity value at 100ºC, and click "Calculate"

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