In recent years, studies on energy are gradually increasing. Because of the danger of fossil fuels' extinction in the near future and the environmental damage of fossil fuels, alternative energy sources have gained importance. In this study, biodiesel is produced from animal fats by transesterification method. Kinematic viscosity variations of B100, B50, B20, B5 and B2 fuels are measured at 313.15 K and 373.15 K at intervals of 10 K. Kinematic viscosity of B100, B50, B20, B5 and B2 fuels depending on the temperature are predicted with Arrhenius blend equation. In addition regression analyses are done in MATLAB program by using Andrade equation with two and three constant, R-2, absolute error and error percentages are determined.