CartonMetricPlan a package
Chargeable weight

Dimensional weight calculator

See which weight is likely to govern a parcel and exactly where measurement and rounding enter the calculation.

Transparent formulaInputs stay on-deviceVerify before shipping
Dimensional weight

See which weight governs the package.

Choose a source-linked rule and follow its measurement, divisor and rounding sequence.

01Finished package
0 saved on this device
02Planning result
Estimated billable weight13 lb

Dimensional weight governs this planning comparison.

Actual4.4 lb
Dimensional13 lb
Length + girth58 in
Calculation path18 × 12 × 8 ÷ 139

UPS publishes divisor 139 for Daily Rates and rounds package measurements and dimensional weight up.

UPS Daily 139Rule reviewed 30 Jul 2026
Primary source
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Why two equal-weight boxes can price differently

Carriers have limited vehicle and aircraft space. Dimensional weight converts package volume into a weight-like planning value, then compares it with scale weight.

Use the rule that matches your shipment

A divisor is not universal. Rate type, service, market and negotiated terms can change the result. Confirm the final shipment in your carrier account.