The actual weight signifies the true weight of a parcel, whereas the dimensional (volumetric) weight is calculated based on the package's dimensions. Let's consider a scenario: suppose you are shipping a delicate sculpture. The dimensional weight (in kilograms) would be computed using the formula: Width (W) multiplied by Length (L) multiplied by Height (H) in centimeters, divided by 5000. This derived value would represent the dimensional weight in kilograms. Upon submission of your package at an SMSA service center, both the actual weight and dimensional weight undergo evaluation. The higher of the two values is then utilized to determine the shipping rate.