Calculate the viscosity at a given temperature, when the viscosity is known at two temperatures. 

The viscosity of a liquid as a function of temperature can be approximated with the Andrade correlation. Given two known temperature-viscosity points, the viscosity of a liquid can be calculated for a target temperature. Lubricating oil producers normally publish the viscosity of their products at two different temperatures. 

This page allows the user to enter two temperature-viscosity points, and a target temperature. The viscosity at the target temperature is calculated when you click the 'calculate' button. 

The calculator can be a useful tool for predicting viscosity at a target temperature, but keep in mind that in real world applications a theoretical viscosity value should always be verified with a viscosimeter. 

The calculator on this site is for informative purposes only and we make no claims as to the accuracy, completeness or fitness for any particular purpose of the results produced by our calculators. The use of any of the calculators' results is at the user's sole risk.