The specific conductivity of concentrated solutions of potassium hydroxide was measured over a temperature range of -15 to 100 degrees C for concentrations of 15 to 45 mass %. An empirical correlation relating temperature, mass % KOH, and specific conductivity was made with a correlation coefficient of 0.9995. Using experimental density data from Akerlof and Bender, the correlation was extended to relate temperature, molarity, and conductivity.