weight limit on usps first class mail

weight limit on usps first class mail is typically 13 ounces for domestic shipments. This weight limit applies to letters, postcards, and small parcels that are mailed through USPS First-Class Mail service. If a package exceeds the weight limit, it will need to be shipped via a different USPS service, such as Priority Mail. First-Class Mail is ideal for light, small items, and it’s the most affordable option for shipping within the United States when the weight is within the limit.