Shipping Rules
How to Measure a Box for Shipping Correctly
Learn how to measure a box from the outside, record length, width, and height, calculate dimensional weight, and avoid common shipping measurement mistakes.
Shipping Rules
Shipping rules can affect how you prepare, measure, and compare packages before sending them. This category provides practical guidance on package dimensions, weight considerations, and the way size requirements may differ by mail class or carrier. Learn how to measure a box accurately, review USPS package size limits, and understand UPS maximum package dimensions and weight rules. The goal is to make shipping information easier to follow so you can identify relevant requirements before choosing packaging or arranging delivery. Use these resources as a starting point for planning, and confirm the latest details with the applicable carrier or service before shipping. Whether you are checking a box’s length, width, and height or comparing limits across shipping options, these guides help organize the key measurements and rules that commonly influence package preparation.
Shipping Rules
USPS Package Size Limits by Mail Class
Learn how USPS measures packages, how size and weight limits differ by mail class, and how to verify the current rules before you ship.
Shipping Rules
UPS Maximum Package Dimensions and Weight Rules
Learn how to measure a UPS package, calculate length plus girth, understand common U.S. size and weight limits, and avoid unexpected handling charges.