Volumetric Coefficient of Thermal Expansion is usually measured using the 1 Per Kelvin[K⁻¹] for Thermal Expansion. 1 Per Rankine[K⁻¹], 1 Per Celsius[K⁻¹], 1 Per Fahrenheit[K⁻¹] are the few other units in which Volumetric Coefficient of Thermal Expansion can be measured.