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FedEx Dimensional Weight Calculator

Estimate FedEx DIM weight for U.S., Puerto Rico, and international parcel shipments using the published 139 reference divisor. Confirm your Service Guide and contract.

Live calculator

Calculate dimensional & billable weight

Enter finished outside dimensions. Results update with every change.

CALCULATES LOCALLY · NO UPLOAD

Length in Width in Height in Actual weight lb

Dimensions Weight Carrier / method

DIM divisor Editable. The unit follows the selected preset. Apply carrier-style whole-unit rounding

FORMULA

DIM Weight = Length × Width × Height ÷ DIM Divisor

Billable weight is the greater applicable actual or dimensional weight.

ESTIMATED BILLABLE WEIGHT-

Dimensional weight-

Actual weight-

Cubic size-

Difference-

Billing basis-

Enter package measurements to calculate.

VOLUME-

DIVISOR UNITin³/lb

Method

How this calculation works

FedEx publishes a 139 divisor and applies dimensional pricing to eligible customer packaging; measured dimensions and agreements can affect rating. ParcelCal runs the calculation in your browser; no package or shipment information is uploaded.

FORMULA

FedEx DIM weight = Rounded L × W × H ÷ 139

FedEx publishes a 139 divisor and applies dimensional pricing to eligible customer packaging; measured dimensions and agreements can affect rating.

Worked example

FedEx 24 × 16 × 12 in carton

1.Cubic size: 4,608 in³
2.4,608 ÷ 139 = 33.15 lb
3.Round up: 34 lb DIM weight

At 18 lb actual weight, the estimated billable weight is 34 lb.