USPS Shipping Calculator for 2018

on Jan 18th, 2018 | in Etsy Tips, Tools | 5 Comments

The U.S. Postal Service updated shipping rates on January 21, 2018. This shipping calculator turns the near-indecipherable USPS rate charts into an easy to use tool for updating your shipping profiles and listings.

Take a look at my domestic shipping article if you need a crash course in weighing and packaging.

The rates shown below are commercial base pricing offered by Etsy, PayPal and other online vendors. Be sure to check the prices against your vendor to make sure they’re using commercial prices. Expect to pay more if you show up at the post office without postage. Pricing for flat rate items is included in the table below.

USPS Shipping Calculator

USPS Flat Rates

First Class Mail 0.50
Priority Mail Flat Rate Envelope 6.55
Priority Mail Legal Flat Rate Envelope 6.85
Priority Mail Padded Flat Rate Envelope 7.10
Priority Mail Small Flat Rate Box 7.05
Priority Mail Medium Flat Rate Box 12.85
Priority Mail Large Flat Rate Box 17.65
Priority Mail International Flat Rate Envelope
Priority Mail International Flat Rate Envelope
(Other countries)
Priority Mail International Small Flat Rate Box
Priority Mail International Small Flat Rate Box
(Other countries)
Priority Mail International Medium Flat Rate Box
Priority Mail International Medium Flat Rate Box
(Other countries)
Priority Mail International Large Flat Rate Box
Priority Mail International Large Flat Rate Box
(Other countries)
Express Mail Flat Rate Envelope 21.98

Disclaimer: This tool is intended to help Etsy sellers, but is unlikely to cover the needs of every shop and business owner. Please use the calculator as a tool in your tool box and not the sole source for your pricing decision. Shipping is complex and we hope to ease the pain a bit. Please keep in mind that extra services, insurance, etc. are not taken into account with this calculator nor does this tool account for all package types (over-sized, balloon, etc.).

Cover image by zach winter on Flickr.
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5 Responses

  1. Erin says:


    I posted a question on the other page which hasn’t posted for some reason. I’m curious to know how you’re able to get these rates. Anytime I try using USPS postage calculator, it has missing information.

    • Brittany says:

      Erin, you can see your comment and my reply to your question here. The data that is used for all the shipping calculators on this site come directly from the USPS. The likely reason you are getting different results from the USPS estimator and my calculator is that all my calculators are set up for Commercial Based Pricing while the USPS estimator is set up using Retail rates. Hope that clears things up for you.

  2. Gale says:

    I’ve come to depend on your updates–so much easier than USPS or other sites. Thank you.

  3. Thank you so much for putting this tool together! The Post Office’s site isn’t half as clear. 🙂

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