The comparison
A common planning calculation in centimetres is length × width × height × pieces ÷ divisor. The greater of volumetric and actual weight is the chargeable weight.
Confirm the divisor
The divisor can differ by carrier and service. The public calculator uses 5,000 cm³/kg for planning and labels it explicitly.
Packaging changes cost
Reducing unused space can reduce chargeable weight even when the product itself is unchanged.
Bring these details
A useful starting brief.
- Packed dimensions
- Piece count
- Actual scale weight
- Carrier and service divisor