Dimensional Weight Calculator
Compare actual and volumetric weight for multiple packages with an editable divisor and clearly stated billing assumptions.
Free to use · Calculated in your browserYour packing numbers
How this result was calculated
- Convert outside dimensions to centimeters; multiply length × width × height.
- Dimensional weight = cubic centimeters ÷ 5,000. Convert the result from kg to kg if needed.
- For each physical package, take the greater of actual and dimensional weight, round it up by the selected increment, then multiply by quantity and sum.
- Selected calculation: 12 kg, without chargeable-weight rounding.
Detailed breakdown
| Package type | Quantity | Actual / package (kg) | Dimensional / package (kg) | Package method / each (kg) | Package method / row (kg) |
|---|---|---|---|---|---|
| Package 1 | 1 | 8 | 12 | 12 | 12 |
Divisors are editable examples, not carrier commitments. Confirm the service, divisor, package measurement rules, minimums and rounding with your carrier.
Dimensions are not rounded before calculation. Surcharges, minimum billable weights and size restrictions are outside this model.
Actual and dimensional summary weights remain unrounded; only the chargeable result uses the selected rounding.
How to use this tool
Dimensional weight = length × width × height ÷ dimensional divisor, using the units named beside the divisor. The basic comparison takes the greater of dimensional and actual weight for each package, then multiplies by quantity and adds package totals.
A worked example
With a metric divisor of 5,000 cm³/kg, a 50 × 40 × 30 cm carton has 12 kg dimensional weight. If it weighs 8 kg, the unrounded higher-of estimate is 12 kg. Ten identical cartons give 120 kg.
Put the result to work
Divisors are configurable examples. Carrier contracts can specify dimension rounding, weight increments, minimum weights, and exceptions. Verify the rules for the exact service; this estimate is not an official quotation or a complete carrier tariff model.
Read the complete guideCommon questions
Are dimensional and volumetric weight the same thing?
In this calculator they name the same volume-based weight estimate. The applicable divisor and billing rules still depend on the carrier and service.
Is 5,000 the correct divisor for every shipment?
No. It is one common metric example. Confirm the divisor, units, rounding rules, and service terms before using a result for a shipping decision.
Should I compare the shipment totals or each package?
This model compares actual and dimensional weight package by package and adds the results. A service with different aggregation rules may produce another billed total.