To determine the maximum weight you can send with the United States Postal Service (USPS), it is essential to consider the various mail classes and services they offer.

The maximum weight you can send with USPS varies depending on the mail class or service you choose. For most services, the maximum weight is 70 pounds. However, for First-Class Mail, the limit is 13 ounces for large envelopes and small packages, and for USPS Marketing Mail, the limit is 15.994 ounces for letters and 15.99 ounces for flats. To ensure your package meets the weight requirements, it is recommended to weigh your package before shipping and select the appropriate USPS service based on your needs.

Each service has its own weight restrictions, and understanding these limits will help you choose the most suitable option for your needs.

  • 1. First-Class Mail: This service is ideal for sending letters, postcards, and small packages. The maximum weight for First-Class Mail is 3.5 ounces for letters and 13 ounces for large envelopes and small packages.
  • 2. Priority Mail: This service offers faster delivery times and is suitable for sending packages and envelopes. The maximum weight for Priority Mail is 70 pounds.
  • 3. Priority Mail Express: This is the fastest USPS service, offering overnight delivery for most locations. Like Priority Mail, the maximum weight for Priority Mail Express is 70 pounds.
  • 4. USPS Retail Ground: This service is designed for less time-sensitive and oversized packages. The maximum weight for USPS Retail Ground is 70 pounds.
  • 5. Media Mail: This service is specifically for sending books, manuscripts, and other educational materials. The maximum weight for Media Mail is 70 pounds.
  • 6. Parcel Select Ground: This is an economical ground delivery service for large or heavy packages. The maximum weight for Parcel Select Ground is 70 pounds.
  • 7. USPS Marketing Mail: This service is for businesses sending advertisements and promotional materials. The maximum weight for USPS Marketing Mail is 15.994 ounces for letters and 15.99 ounces for flats.

Learn more

To learn more about the maximum weight you can send with USPS, follow these steps on the official USPS website, usps.com:

  • 1. Visit the website: Open your preferred web browser and go to usps.com.
  • 2. Locate the “Quick Tools” section: On the homepage, you will find a section titled “Quick Tools” in the top left corner. This section provides access to various USPS services and information.
  • 3. Click on “Calculate a Price”: In the “Quick Tools” section, click on the “Calculate a Price” option. This will take you to the “Postage Price Calculator” page.
  • 4. Enter the required information: On the “Postage Price Calculator” page, you will need to provide information about your package, such as the destination, ZIP code, and mailing date.
  • 5. Choose the package type: After entering the required information, you will be prompted to select the type of package you are sending. Choose the appropriate option from the list, such as “Package” or “Large Package.”
  • 6. Enter the package details: Next, you will need to provide information about your package’s dimensions and weight. Enter the length, width, height, and weight of your package in the designated fields.
  • 7. Review the weight restrictions: After entering your package details, the website will display the available shipping options and their respective weight limits. Review these options to determine the maximum weight you can send with USPS for each service.

Additional resources

Another valuable resource is the Postal Explorer website (pe.usps.com), which contains the Domestic Mail Manual (DMM) and the International Mail Manual (IMM). These manuals provide comprehensive information on USPS mailing standards, including weight and size restrictions for domestic and international shipments.

The Federal Register (www.federalregister.gov) is another important government resource that publishes USPS regulations and notices. By searching for USPS-related updates, you can stay informed about any changes to weight limits and other mailing requirements.

Our articles make government information more accessible. Please consult a qualified professional for financial, legal, or health advice specific to your circumstances.

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