Dimensional Weight Calculator
Calculate volumetric shipping weight with a visible, editable divisor and compare it with actual package weight.
Dimensional weight calculation
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Calculate locally in your browser. Your shipment details are not saved.
How it works
Dimensional weight translates the space occupied by a package into a weight equivalent. It helps compare a bulky, lightweight carton with a smaller, heavier one under a particular rating rule.
Enter the finished outside dimensions and choose the divisor from your carrier or forwarder’s service terms. The divisor here is expressed in cubic centimeters per kilogram. Imperial inputs are converted first; this is not an inches-to-pounds divisor field.
A smaller divisor produces a larger dimensional weight for the same carton. Optional actual weight lets you see whether mass or volume is the larger planning value. The calculator retains precision until it formats the result.
Formula
Dimensional weight (kg) = length (cm) × width (cm) × height (cm) ÷ divisor × quantity
Inputs are normalized before calculation. Results are rounded for display.Worked example
For 48 cartons measuring 60 × 40 × 35 cm, divisor 6000 produces 14 kg each and 672 kg in total. Divisor 5000 produces 16.8 kg each and 806.4 kg in total. The physical cartons have not changed; the chosen conversion rule has.
Limitations and assumptions
- Confirm the dimensional divisor used by your carrier and service.
- Carrier measurement rounding, package rounding, minimum weights and special packaging rules are not applied.
- Use separate calculations for different carton sizes or service rules.
Read the calculation disclaimer before relying on an estimate for a shipment.
Frequently asked questions
Should I use 5000 or 6000?
Use the divisor stated for your particular service. Both are available for planning, and a custom value is supported. Neither preset is a universal carrier rule.
Why can a light carton have a large dimensional weight?
Its outer dimensions occupy transport space. A large carton containing a light product can therefore have a weight equivalent above its actual mass.
Can I enter an imperial divisor such as 139?
This field uses cm³/kg. Do not enter an in³/lb divisor directly. Ask for the matching metric rule or convert the divisor before using a custom value.