Compute the XY scale factor needed to compensate for material shrinkage on printed parts. Enter your measured dimensions on a calibration cube vs the nominal design dimensions, and get the slicer scale value to apply.
Given a measured top print speed and layer height/width, compute the volumetric flow rate. Useful for finding the real ceiling of your hotend for a given filament — past which print quality drops sharply regardless of slicer settings.
Estimate the real cost of a single print: filament used, electricity at your local rate, wear-and-tear on consumables (nozzle, plate), and an optional hourly rate for batch-job pricing.