Phase transitions in solid cis-1,2-cyclohexanediol and trans-1,2-cyclohexanediol and cis/trans-1,4-cyclohexanediol have been studied by differential scanning calorimetry over the temperature range 241 to 383 K. Besides a low-temperature crystalline form, DSC curves show the existence of a solid rotator phase in cis-1,2-cyclohexanediol whilst for the others, only one solid phase is present. Enthalpies of sublimation and vaporization were determined by evaporation into a vacuum using an isothermal calorimeter.