KNOW THE MATH
How it works
Parcel services may charge by the physical or space-based weight, whichever is higher. Divisors differ by service and route. Choose the divisor matching your quote; carrier-specific rounding and minimums may produce different billed values.
Formula
Volumetric weight (kg) = length (cm) × width (cm) × height (cm) ÷ divisor. Chargeable weight = higher of volumetric and actual weight.
Worked example
A 50 × 40 × 30 cm parcel has 12 kg of dimensional weight using divisor 5,000. With actual weight 8 kg, the estimate is 12 kg.