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Package Sizes and Dimensions: USPS International

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Below are the international package types and weight limitations for shipments and packing materials offered through the USPS. Many of these supplies can be ordered for free through USPS - learn more.

   

INTERNATIONAL PACKAGE SIZE CHART 

Package Type

Service

Max Weight

Max Dimensions*

Package First Class Package Service 4 lbs 24" Length, L+H+W= 36"
Priority Mail 4-70 lbs
(varies by country)
Length + Girth** < 108"
(varies by country)
Priority Mail Express 22-70 lbs
(varies by country)
Length + Girth** < 79"
(varies by country)
Flat Rate Small Box Priority Mail 4 lbs  8 5/8" x 5 3/8" x 1 5/8" 
Flat Rate Medium Box Priority Mail 20 lbs  13 5/8" x 11 7/8" x 3 3/8" 
Flat Rate Large Box Priority Mail 20 lbs  12" x 12" x 5 1/2"
Large Board Game Box  Priority Mail 20 lbs  23 11/16" x 11 3/4" x 3"
*Some packages are also subject to minimum dimensions. First Class Package Rolls may be no smaller in length than 4", and the length plus twice the diameter combined, may be no smaller than 6-3/4". Learn more here.  Priority Mail parcels must have one side large enough to accommodate, postage and the PS Form 2976-E (envelope for customs label), approximately 10-1/4" wide and 7-1/4" high. Learn more here. 
**Girth is a special dimensional measurement, equal to (2 x width) + (2 x height). Learn more about shipment dimensions.

 

INTERNATIONAL ENVELOPE SIZE CHART 

Envelope Type

Service

Max Weight

Max Dimensions

Letter First Class Mail 3.5 oz 11 1/2" L x 1/4"W x 6 1/8" H
Flat Rate Envelope Priority Mail
Priority Mail Express
4 lbs  12 1/2" x 9 1/2"
Flat Rate Padded Envelope Priority Mail
Priority Mail Express
4 lbs 12 1/2" x 9 1/2"
Flat Rate Legal Envelope Priority Mail
Priority Mail Express
4 lbs 15" x 9 1/2"
Flat Rate Small Envelope  Priority Mail 4 lbs 6" x 10"
Flat Rate Gift Card Envelope  Priority Mail 4 lbs  10" x 7"
Flat Rate Window Envelope  Priority Mail 4 lbs  5 x 10"

 


Related articles: 

Can I use Regional Rate Boxes for International Shipments?
Package Sizes and Dimensions: USPS Domestic
What is the most cost effective way to ship my packages via USPS?
What is a USPS SCAN form and why is it useful?
ShippingEasy's USPS Rate Tables

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