Web Tools API Portal
Free Ecommerce Website Shipping & Shopping Cart APIs
The USPS Web Tools® API library gives ecommerce website shopping carts and shipping software access to valuable USPS® data—free of charge! You can check shipping rates, track packages, and schedule a package pickup all through USPS Web Tools. Get started now or read on to learn more.
Shipper Support Center
USPS Web Tools are ecommerce application program interfaces (APIs) that can be used for online stores or customer service centers—free of charge.
Ecommerce Website Support
Get access to USPS Web Tools through a simple registration process.
Once registered, you’ll receive an email with your assigned Web Tools User ID. You’ll then have access to the most popular APIs. For access to more secure APIs, like Label Printing, you’ll need additional permissions. Contact the Internet Customer Care Center with the following information:
- “Web Tools API Access” in the subject line of the email
- The software vendor you are using
- Which APIs you want to access beyond those provided automatically
Want to hire a professional?
To assist businesses that need help integrating USPS Web Tools into their sites, the Postal Service™ encourages working with companies such as eCommerce Guru to seamlessly provide and connect these services.
USPS Web Tools Integrators
ECommerce development companies can assist with the integration of USPS Web Tools or help you build a customer solution using Web Tools ecommerce APIs.
Send Mail & Packages
Convenient Domestic Shipping
Want to save time and ship from home? Use Click-N-Ship® service to pay for postage and print a shipping label from your printer or at a Post Office™ location. Plus, you can schedule a USPS® pickup from your home or office.1
With the USPS Loyalty Program, small businesses can now earn credits for Priority Mail® and Priority Mail Express® labels printed with Click-N-Ship.
Print a Label Click-N-Ship
Find a Location
Search for Post Offices™ and other locations to buy stamps, ship packages, apply for passports, and more.
Calculate
Determine how much postage or how many stamps you need for your letter or package based on size, weight, and destination.
Look Up a Zip Code ™
Find a ZIP Code™ by street address or city and state to make sure your mail arrives at the right place.
Shipping & Mailing with USPS
Order Free Supplies
Start your shipping with free Priority Mail® and Priority Mail Express® envelopes and boxes, and other supplies.
Buy Stamps
Browse our collection of postage stamps. Find stamps by theme, color, season, mail service, and more.
Prepare Your Package
Get tips on how to pack your box, choose a mail service, and add enough postage so your package arrives on time.
Ship to Military
Sending APO, FPO, or DPO mail? No matter where your loved one is stationed, you’ll pay domestic prices for military and diplomatic mail.
Create Custom Mail, Cards, & Envelopes
Personalize cards and envelopes with your own photos or use third-party vendor templates to help you create a unique design.
Purchase Money Orders
Sending money orders at any Post Office is easy to do. Pay with a debit card, cash, or traveler’s check. Money orders are safe, cost-effective, and never expire.