How to Calculate the Postage for a USPS Package

The United States Postal Service (USPS) ships packages to all domestic locations and most international destinations. If you have a package that you want to send to a domestic or international destination, use USPS's online postage calculation tool to calculate the amount of postage required to send your package. Use this tool to price different USPS services and receive the estimated time for package delivery.

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Instructions

- 1
  
  Visit the online USPS postage calculation tool.
- 2
  
  Click the domestic or international postage "Go" button.
- 3
  
  Select your destination country from the drop-down menu for international packages or enter your origin and destination Zip codes for domestic packages.
- 4
  
  Enter the expected mailing date and time.
- 5
  
  Select one of the flat-rate package options or select the shape of your package.
- 6
  
  Enter the weight of the package. Use pounds and ounces to enter the package's weight. If using a flat-rate package option, skip this step.
- 7
  
  Click the "Continue" button to display the postage rate for your package.