How can I determine the weight of a package?
The U.S. Postal Service recommends that you use a scale to determine the weight of your package. Scales can be easily purchased online at The Postal Store®.
Please keep in mind that if the package weighs more than the weight you entered, it will require additional postage when it is mailed or delivered.
A convenient alternative to a scale is our Priority Mail Express® Flat Rate Envelopes and Priority Mail Flat Rate® Envelopes and Boxes. For one low price, you can mail any amount of material to a U.S. destination, of any weight up to 70 lbs that will easily fit in the flat rate envelope or box.