Dimensional Weight Calculator accuracy and testing

Formula source

• Cubic inches = length x width x height. Dimensional weight = cubic inches / divisor. Billable weight = max(actual weight, dimensional weight). Estimated charge = billable weight x rate per pound + base fee.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• All rates, fees, costs, order values, demand volumes, and policy targets are user-entered assumptions.
• The calculator uses transparent deterministic formulas and does not fetch live carrier, marketplace, warehouse, tax, or provider rates.
• Results are planning estimates and should be checked against your carrier terms, marketplace fees, inventory system, and accounting policy.
• Inputs are processed locally in your browser.

Unit handling

• Carrier Rule Preset accepts one of the configured options.
• Length accepts values in in.
• Width accepts values in in.
• Height accepts values in in.
• Actual Weight accepts values in lb.
• Custom Dimensional Divisor accepts numeric values.
• Rate per Pound accepts values in $/lb.
• Base Fee accepts values in $.
• Estimated Shipping Charge is displayed as currency.
• Billable Weight is displayed in lb.
• Dimensional Weight is displayed in lb.
• Cubic Inches is displayed in in^3.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Currency outputs are displayed with standard US dollar formatting.
• Input precision follows configured step values where provided.

Version history

Change log