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Shipping Dimensional Weight Calculator
Compare actual and dimensional package weight using an explicit divisor and rounding policy.
Package length (cm), Package width (cm), Package height (cm), Actual mass (kg), Dimensional divisor (cm³/kg), Dimension rounding, Billing weight step (kg)
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the labelled values and use the displayed units.
- Choose Calculate result and inspect the full report, assumptions and undefined/no-solution status.
- Choose Download result to save the complete JSON. Reset clears results and restores the example controls.
Examples
Package length (cm): 40
Package width (cm): 30
Package height (cm): 20
Actual mass (kg): 3
Dimensional divisor (cm³/kg): 5000
Dimension rounding: ceil-cm
Billing weight step (kg): 0.5
Limitations
- Dimensions cm; actual mass kg; divisor cm^3/kg supplied by user. Round each dimension upward to whole cm or retain exact input; optional billing step kg rounds max(actual,dimensional) upward. No carrier-rate, fee or universal tariff claim.
- Scalar numeric inputs use explicit decimal syntax and IEEE-754 arithmetic; unless a tighter bound is stated, positive values are 1e-12–1e12 and nonnegative values 0–1e12. Derived inventory counts above 1 billion and nonfinite results are refused. Combined input limit400,000 UTF-8 bytes;complete JSON output limit4MiB. Numeric/code input controls allow128 characters. All processing stays in your browser.
- Whole purchasing/layout counts use exact entered decimal quantities for rational formulas; circular geometry remains floating-point.
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