Volumetric Weight Calculator
Avoid shipping surprises. Calculate the 'dim weight' of your boxes to understand how carriers will bill your shipment based on size versus actual weight.
What is volumetric weight?
Volumetric weight (also known as dimensional weight) is a calculation used by shipping carriers to account for the space a package occupies. Carriers charge based on either the actual weight or the volumetric weight, whichever is greater.
How do I calculate volumetric weight?
The formula is (Length × Width × Height) / Volumetric Divisor. The divisor varies by carrier and whether the units are metric (cm/kg) or imperial (inches/lb).
What is a common volumetric divisor?
For international shipping, 5000 is common for metric units. For domestic US shipping, 139 is a common divisor for imperial units.
Why do carriers use volumetric weight?
Lightweight, bulky items (like a large box of pillows) take up significant space in an airplane or truck, limiting the carrier's capacity even if the actual weight is low. Volumetric weight ensures fair pricing for the space used.