Calculate the Viscosity Index according to ASTM D2270 and visualize Temperature-Viscosity relationship per ASTM D341
Calculated per ASTM D2270
Note: This calculator implements the ASTM D2270 standard for calculating the Viscosity Index and ASTM D341 for the temperature-viscosity relationship of petroleum products.
Valid for KV100 values from 2 cSt to 70+ cSt. Both viscosity values must be in centistokes (cSt) or mm²/s.