Dimensional (DIM) Weight Calculator & Resource Center
Simply select a carrier and enter the length, width and height (in inches) of your parcel.
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To see the various Dimensional Weight policies of parcel shipping carriers, click here.
To see details on how to calculate girth of a package, click here.
To see the various Dimensional Weight policies of parcel shipping carriers, click here.
To see details on how to calculate girth of a package, click here.

DIM Weight FAQ

The Neopost IS-280 iMeter™ gives you direct access to USPS® commercial discounted rates, so you can save up to 15% on postage. And, for the first time ever, postage meter get a discount on First-Class postage.

The USPS® DIM divisor is 194, but only for parcels traveling 1000 miles or more are subject to DIM rating. For FedEx and UPS domestic ground and air parcel shipments, it is 166. 

All packaging should be measured to see if it fits within dimensional weighting guidelines.

The USPS® defines a parcel as a single shipment less than 70 lbs. The major carriers accept single shipments on their air and ground networks as 150 lbs or less. A carrier viewing a more favorable parcel likely views many at a higher weight within these thresholds as opposed to 1-10 lb shipments. 

It is always important to measure your packaging—regardless of type or even if it is carrier provided or not—to see if it is subject to DIM. Again, the calculation in inches is L x W x H, divided by 166 for the major carriers. For the USPS, it is 194 as the divisor, but only for parcels traveling 1000 miles or more as subject to DIM rating. 

It depends on a host of factors, average weight and distance traveled being most important. Additionally, the access to a scale is important—if there is no access or an inability to accurately weigh a package, then a flat rate package might be beneficial. In general, a shipper that can adequately plan for volume and box type is likely better served with their own packaging as opposed to a flat rate. 

Domestic Services DIM Calculations
FedEx Express® and FedEx Ground® Services (Length x Width x Height) ÷ 139 inches for Express, Ground and international import/export packages
UPS Air® and UPS Ground® Services (Length x Width X Height) ÷ 139 inches for packages greater than 1 cubic foot (1728 cubic inches). For packages under 1 cubic foot (1728 cubic inches), the calculation is Length X Width X Height ÷ 166 inches
USPS® parcel services (excludes USPS Parcel Select®) (Length X Width X Height) ÷ 194 inches (packages traveling 1000 miles or greater, or if package exceeds 1 cubic foot in size)
UPS SurePost® (Length x Width X Height) ÷ 139 inches for packages greater than 1 cubic foot (1728 cubic inches). For packages under 1 cubic foot (1728 cubic inches), the calculation is Length X Width X Height ÷ 166 inches
FedEx SmartPost® Does not currently charge DIM weight for this service
OnTrac™ (Length X Width X Height) ÷ 166 inches
Spee-Dee Delivery© Applies to packages with combined length and girth over 130”. Packages 130”-170” < 100lbs = flat dimensional fee; > 100lbs + flat fee
Golden State Overnight (GSO)® (Length X Width X Height) ÷ 166 inches for parcels 3 cubic feet (5,184") or greater
LSO® (includes Express Courier International) (Length X Width X Height) ÷ 166 inches for parcels 1728" or greater for ground and express services
Eastern Connection™(Dicom) (Length X Width X Height) ÷ 194 inches
PITT OHIO© (Length X Width X Height) ÷ 194 inches for parcels 3 cubic feet (5,184") or greater
LaserShip® (includes Prestige Delivery Systems©) (Length X Width X Height) ÷ 194 inches for parcels 3 cubic feet (5,184") or greater
Courier Express Customized based on shipper's profile
International Bridge® (Length X Width X Height) ÷ 194 inches after 1 cubic foot; packages limited to 108"

 

 * All information in the chart above is based on publicly available sources as of December 2016 or direct contact with the carrier and their policies. UPS Dimensional Weight policy goes into effect January, 2017 while the FedEx policies go into effect in February, 2017. Neopost USA strongly recommends contacting individual carriers to understand their latest policies on dimensional weight rating. Note that carrier policies can be subject to change and table is used for illustrative purposes only.