# Dimensional (volumetric) weight calculator for parcels

Box dimensions, actual weight and the carrier’s divisor in; volumetric weight and the billable weight the carrier charges for out.

Source: https://webkodingtheme.com/tools/dimensional-weight-calculator/

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Free tool

# Dimensional weight calculator

Carriers charge for the larger of what a parcel weighs and how much space it takes. Enter the box and see which one you are paying for.

Length (cm) Width (cm) Height (cm) Actual weight (kg) Carrier divisor 5000 — most express carriers (cm/kg) 6000 — some road and economy services 4000 — some couriers and air freight
Billable weight 4.8 kg
Volumetric weight 4.8 kg
Actual weight 3 kg

## How it is calculated

Volumetric weight (kg) = length × width × height in cm ÷ divisor.
Billable weight = the larger of volumetric and actual weight.
In inches and pounds the same rule uses 139 for most express services: L × W × H ÷ 139. Check your carrier’s current divisor — it is set per service and can change.

## Questions

### Why am I charged for more than the parcel weighs?

Because a light, bulky box takes space a heavier one could have used. Carriers bill the larger of the two weights, and the divisor is how they convert space into kilograms.

### How do I lower the billable weight?

Use the smallest box the item fits safely, and measure it after packing — a bulging box is measured at its widest point.

### Which divisor should I use?

The one in your carrier agreement. 5000 is the most common for international express in centimetres; some domestic and economy services use 6000 or 4000.

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