📦 Dimensional Weight
Length × width × height ÷ divisor — see the weight your carrier will actually bill.
Package details
Carriers bill by size converted to weight or actual weight — whichever is greater. Enter your box (or tap an example) to see which one you’d pay.
What is dimensional weight?
Carriers charge by whichever is greater: the actual weight of a package or its dimensional (volumetric) weight — the space it occupies converted into a weight using a divisor. A big box of pillows pays for its size, not its lightness. The formula is length × width × height ÷ divisor.
Which divisor should I pick?
International express services (DHL, FedEx, UPS) use 5000 with centimeters and kilograms. Many freight forwarders, consolidators and postal services use 6000, which produces a lower dimensional weight for the same box. US domestic services quote in inches and pounds with divisors of 139 (UPS, FedEx) or 166. Your carrier's rate card states the exact divisor — when in doubt, calculate with the harsher one.
How do I lower my chargeable weight?
Shrink the box. Because the three dimensions multiply, trimming a few centimeters from each side compounds: a 40×40×40 box at divisor 5000 bills 12.8 kg, while 35×35×35 bills 8.6 kg — a third cheaper for the same contents.