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Packaging Carton Dimensional Weight Calculator

Estimate carton cube, dimensional weight, chargeable weight, and rounded billable weight from carrier-measured package dimensions and user-supplied carrier/service parameters. Formula: dimensional weight = cubic inches / divisor; apply it only when cube is strictly greater than the entered threshold; chargeable weight = max(actual scale weight, applied dimensional weight); billable weight = ceiling(chargeable weight / rounding increment) × increment. Divisor, threshold, dimension rules, and increment vary by carrier/service and must be verified for the shipment; this tool supplies no carrier rule. NIST Guide to the SI Appendix B provides inch/foot volume conversion: https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors.

Example values are prefilled to demonstrate the calculation. Replace them with values for your product, package, equipment, and operating conditions.

Inputs

Carton dimensions and carrier parameters

Range: at least 0 in

Enter the external package length in inches after applying the selected carrier/service's measurement and dimension-rounding rule. Do not round twice.

Range: at least 0 in

Enter the external width after applying the same selected carrier/service measurement and dimension-rounding rule as length and height.

Range: at least 0 in

Enter the external height after applying the selected carrier/service measurement and dimension-rounding rule.

Range: at least 0 lb

Enter actual package scale weight in pounds before carrier billable-weight rounding.

Range: at least 0 in³/lb

Enter the applicable carrier/service divisor in cubic inches per pound.

Range: at least 0 in³

Enter the applicable service threshold in cubic inches; the calculator applies dimensional weight only when package cube is strictly greater than this value. Use zero only if the selected rule has no threshold.

Range: at least 0 lb

Enter the positive billing weight increment in pounds from the selected service. Actual and dimensional weights are rounded upward to this increment after the greater is selected.

Result

Valid
Greater of actual and applied DIM weight before rounding (lb)
15.54 lb
Estimated billable weight after entered increment (lb)
16.00 lb
Carrier-rated carton cube (ft³)
1.2500 ft³
Carrier-rated carton volume (in³)
2,160.00 in³
Calculated dimensional weight before increment rounding (lb)
15.54 lb
Weight selection basis
Dimensional weight governs before billable-weight increment

Calculation

Carrier-rated carton volume (in³)
—
Carrier-rated carton cube (ft³)
—
Calculated dimensional weight before increment rounding (lb)
—
Greater of actual and applied DIM weight before rounding (lb)
—
Estimated billable weight after entered increment (lb)
—

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