What is dimensional weight?
If you're shipping an item that takes up a lot of space but isn't very heavy, a shipping company might charge you for the item's dimensional weight instead of its actual weight. Light packages that take up a lot of room in a shipper's trucks or airplanes actually cost the company money to ship if you're charged based only on their actual weight.
Shipping companies won't ship items that exceed a certain dimensional weight.
To calculate this weight, the US Postal Service (USPS), UPS and Fed Ex use different formulas. Find out how to calculate dimensional weights for packages shipping via: