Digital foot measurements are typically obtained from foot scanners or digital measuring software providers and they are consumed (or used) by footwear brands, orthotic workshops, size recommendation platforms, or even directly by footwear and orthotics users. IEEE SA Industry Connections (IC) 3D Body Processing (3DBP) Footwear Subgroup recommends that each digital foot measurement provider make measurement definitions publicly available for foot measurement data consumers. Foot scanning companies are providing measuring software that follow different definitions. This is particularly problematic in the case of key references, such as the foot axis. Many measurements are dependent upon the definition of the foot axis, giving rise to different values assigned to the same designation. This compilation will facilitate the comparison across definitions for measurement data consumers and help them make informed decisions.