GetShipMargin
WeightVerified formula

Dimensional Weight Calculator

Find the weight a carrier may use when package size exceeds physical weight.

Free · no sign-upRule: generic-dim-v1
Package inputs
Use outside package dimensions. Your result stays on this device unless you choose to save it.
Generic DIM scenario
Live result Deterministic
Shipping intelligence
No AI estimates. Every output comes from the published formula.

Your result will appear here

Enter package data and calculate. No account is required.

How to use this tool

A decision, not just an output

Calculate dimensional and billable weight from package size and actual weight. Read the output alongside its interpretation, assumptions, limitations, and source. Marketplace rates and external requirements should always be confirmed at the linked official source.

Formula & example

Transparent method

Dimensional weight = rounded package volume ÷ verified divisor; billable weight is the greater of actual and dimensional weight.

Example: A 16 × 12 × 8 in box at 4 lb produces a transparent generic DIM scenario using divisor 139.

Assumptions

  • • Rectangular dimensions use the package's outside measurements.
  • • Generic mode is a scenario, not a carrier quote.

Limitations

  • • Contract-specific divisors and rates are not included.
  • • No dollar shipping rate is estimated.

Frequently asked questions

Is the Dimensional Weight Calculator free?

Yes. The primary result is available without creating an account or entering an email address.

How is the result calculated?

Dimensional weight = rounded package volume ÷ verified divisor; billable weight is the greater of actual and dimensional weight.

What should I verify before using it?

Contract-specific divisors and rates are not included. No dollar shipping rate is estimated.

Are my inputs private?

Core inputs are processed in your browser. GetShipMargin Tools records anonymous interaction events, not the business values entered into this form.