Pay for shipping and print postage for your shipment.įor First-Class Mail, shape and weight will determine the price.

Enter the details of your letter or package.

Navigate to the USPS Postage Price Calculator page.On the other hand, USPS Flat Rate uses only the package size to calculate the shipping cost.2 How big is a medium flat rate box? USPS Priority mail uses the dimensional weight and shipping distance to calculate the shipping cost. The main difference between USPS Priority Mail and USPS Flat Rate is the way the shipping cost is calculated. What is the difference between Priority Mail and Priority flat rate? What is the cheapest method to ship a package? However, the service doesn't come with a guarantee for these times. Regardless of whether you decide on flat rate or standard pricing, Priority Mail will still get your package to a domestic destination in usually three days or less and to an international destination within 10 business days. Moreover, it also takes into account a lot of variables when calculating rates, including the size, weight, shape, and destination of a package.0 The difference between flat-rate and standard shipping Standard shipping helps to keep shipping prices down, but also means a much slower delivery time. The only exception is if you are shipping something between 1 lb, 1 oz - 2 lbs to Zone 9 in this case, it's best to use the Medium Flat Rate Box. Looking at the USPS pricing chart, we can see that if your shipment weighs under 2 pounds, USPS Priority Mail rates will be cheaper than the Medium Flat Rate Box.

Is it cheaper to ship flat rate or your own box?įlat rate shipping may be more economical because shipping costs are not based on weight or dimensional weight, especially for smaller but heavier items.

Priority mail medium flat rate box