USPS Shipping Calculator
Access the Most Competitive USPS Shipping Rates
Compare Rates from Top Carriers
Consider Popular USPS Shipping Service Levels
Priority Mail: Weight-based. As the names imply, the shipping fees you pay are based upon the weight of the package and the distance it has to travel, which is also known as the “Zone.”
Priority Mail Flat Rate. “If it fits, it ships.” If your item fits within a specified Flat Rate box or envelope, it’ll ship for the pre-assigned rate of that package.
Priority Mail Cubic. Priority Mail Cubic is one of the best options available, since the USPS bases shipping prices on the size of the package and distance traveled, instead of the package’s weight.
*Rates are subject to change and do not include potential fees to use Shippo’s software (see pricing plans).