Free Volumetric Weight Calculator

Volumetric weight, also called dimensional weight, is a pricing method used by couriers to account for the space a package occupies in relation to its actual weight. Carriers charge based on whichever is greater—actual weight or volumetric weight—to ensure fair pricing for both heavy and bulky lightweight items. This prevents lightweight but large packages from taking up valuable cargo space without appropriate cost.

To get accurate measurements, measure the longest points of your package including any protruding parts or irregular shapes. Use the outer dimensions of the packaged item, not the product itself. For boxes, measure length (longest side), width (shorter side), and height (top to bottom). Always round up to the nearest centimeter for shipping calculations to avoid underestimation.

Couriers use volumetric weight because cargo space in vehicles and aircraft is limited and valuable. A large lightweight package takes up the same space as a heavy dense one, but costs the courier the same in fuel and capacity. Volumetric weight ensures fair pricing by considering both the weight and size of shipments, preventing loss on space-consuming lightweight items.

Common mistakes include: using inner dimensions instead of outer packaging measurements, forgetting to convert centimeters to meters before calculation, rounding down instead of up, not measuring irregular shapes at their widest points, and forgetting to account for packaging materials that add to dimensions. Always double-check your unit conversions and use the complete packaged dimensions.

Actual weight is the physical weight of your package measured on a scale in kilograms. Volumetric weight is a calculated value based on the package dimensions using the formula (Length × Width × Height) × 250. Couriers will charge based on whichever value is higher. Dense heavy items typically charge on actual weight, while large lightweight items charge on volumetric weight.

Aeros Couriers uses industry-standard volumetric weight calculations to ensure transparent and fair pricing. We compare your package's actual weight with its volumetric weight and charge based on the greater value. This calculator uses the same formula we use for quotes, so you can accurately estimate costs before booking. Get an instant quote through our platform for exact pricing tailored to your shipment.