The maximum size for most mailpieces is 108 inches in combined length and girth.

USPS Retail Ground pieces may measure up to 130 inches in combined length and girth (but will be charged oversized prices).

Regardless of the size of the mailpiece, the maximum mailable weight of any mailpiece is 70 pounds.

## What is the largest size box that USPS will ship?

Except for USPS Retail Ground and Parcel Select, no mailpiece may measure more than 108 inches in length and girth combined. Length is the measurement of the longest dimension and girth is the distance around the thickest part (perpendicular to the length). Maximum weight is 70 pounds.

## How large can a USPS First Class package be?

First Class Mail is the most popular and economical way to send items through USPS. You can send standard postcards, letters and large envelopes and small packages up to 15.99 ounces using First Class Mail. If your First Class package is over 15.99 ounces, you must upgrade the mail class to Priority Mail.

## Does USPS have large boxes?

Here are the USPS Boxes You Can Get for Free. The USPS provides free shipping boxes and envelopes for Priority Mail and Global Express Guaranteed packages. Here’s a breakdown of the box and envelope dimensions.

## What size box can you ship USPS?

USPS Priority Mail Flat Rate Options

Type | Size | Price |
---|---|---|

Padded Envelopes | 12 1/2″ x 9 1/2″ | $7.55 |

Legal Envelopes | 15″ x 9 1/2″ | $7.25 |

Small Box | 8 11/16″ x 5 7/16″ x 1 3/4″ | $7.50 |

Medium Boxes | 11 1/4″ x 8 3/4″ x 6″ or 14″ x 12″ x 3 1/2″ | $12.80 |

7 more rows

## What is considered large package USPS?

If any dimensions of your package are larger than the maximum, select Package (or thick envelope). A package is a parcel (or box) less than 84 inches when you add the length plus girth. Length is the longest side of a package. Girth is the distance around the 2 smaller sides of a package.

## Does USPS ship big packages?

Packages must not weigh more than 70 lbs. In most cases, packages may not be more than 108 inches in total length and girth. (130 inches for USPS Retail Ground®.)

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