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18 × 14 × 12 Box Dimensional Weight

Billable weight for an 18 × 14 × 12 in box, a common size for moving boxes, small furniture parts and bulk orders, on UPS, FedEx, USPS, international express and air cargo.

Updated · By Niraj Kumar · 8 sources

Box

Measured inMeasured in
in
in
in

Measure the packed box at its widest points, bulges included. UPS, FedEx and USPS round every fractional inch up.

lb

Parcels are rated box by box; freight on the whole shipment.

Compare

ServicesServices
Every service bills the same22 lbBilled 22 lb for 8 lb of actual weight
UPS Ground
22 lb
14 lb over actual weight · DIM weight
FedEx Ground
22 lb
14 lb over actual weight · DIM weight
USPS Ground Advantage
22 lb
14 lb over actual weight · DIM weight
USPS Priority Mail
22 lb
14 lb over actual weight · DIM weight

Cut the height to 4 in or less and UPS bills actual weight.

Chargeable weight for this shipment, in lb, lightest firstHover or focus a row for the DIM and actual weight behind it. Services billed in the other unit are converted.
  1. 1UPS Ground÷ 13922 lb
  2. 2FedEx Ground÷ 13922 lb
  3. 3USPS Ground Advantage÷ 13922 lb
  4. 4USPS Priority Mail÷ 13922 lb
Service by service, in each one's billing unit
ServiceDivisorDIM weightActualBillable, shipmentBilled on
UPS Ground13922 lb8 lb22 lbDIM weight
FedEx Ground13922 lb8 lb22 lbDIM weight
USPS Ground Advantage13922 lb8 lb22 lbDIM weight
USPS Priority Mail13922 lb8 lb22 lbDIM weight

How is the 18 × 14 × 12 in box's DIM weight calculated?

An 18 × 14 × 12 in box is 3,024 cubic inches, so UPS and FedEx bill it at no less than 22 lb. USPS charges the same 22 lb, since at 1.75 cubic feet it is over its one-cubic-foot threshold. Heavier than 22 lb, every carrier bills actual weight.

DIM weight = L × W × H ÷ divisor; billable = max(actual, DIM, surcharge minimum)

This page uses the same method as the Shipping DIM Weight Comparison Calculator, which explains each term and assumption in full.

An 18 × 14 × 12 in box at 8 lb, by service
ServiceDivisorDIM weightBilled atBills actual weight from
UPS Ground13922 lb22 lb22 lb
FedEx Ground13922 lb22 lb22 lb
USPS Ground Advantage13922 lb22 lb22 lb
DHL Express Worldwide13922 lb22 lb22 lb
Canada Post Regular Parcel6,0008.5 kg8.5 kg8.5 kg
Australia Post Parcel Post4,00012.5 kg12.5 kg12.5 kg
Air freight (IATA)6,0008.5 kg8.5 kg8.5 kg

Worked example

An 18 × 14 × 12 in box weighing 8 lb.

  1. 1UPS Ground: divisor 139, billed at 22 lb (DIM weight)
  2. 2USPS Ground Advantage: divisor 139, billed at 22 lb (DIM weight)

Both bill the same weight, so the rate card decides which is cheaper.

Frequently asked questions

What is the dimensional weight of a 18 × 14 × 12 box?

22 lb on UPS and FedEx: 3,024 in³ ÷ 139 = 21.76, rounded up to the next pound. USPS charges the same 22 lb, since at 1.75 cubic feet it is over its one-cubic-foot threshold. Internationally it is 10 kg by express courier (÷ 5000) and 8.5 kg as air cargo (÷ 6000).

How heavy does a 18 × 14 × 12 box have to be to avoid DIM weight?

At least 22 lb on UPS and FedEx. Below that, you pay for 22 lb whatever the box weighs. At a typical 8 lb for moving boxes, small furniture parts and bulk orders, you are billed for 14 lb of air.

How much would a smaller box save over 18 × 14 × 12?

Taking 2 in off the height, to 18 × 14 × 10, cuts the UPS and FedEx DIM weight from 22 lb to 19 lb. At 8 lb, a height of 4 in or less bills at actual weight. Void fill and oversized boxes are the most common DIM leak.

Sources

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