Calculate USPS times and rates
Determining USPS domestic and international shipping cost is now easier than ever. Fill in the details and let our online calculator find out your postage rate and transit time.
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Print USPS shipping labels
Create shipping labels certified by USPS and carriers worldwide in a few clicks. It’s free!
- Speed up shipping process
- Save shipping cost
- Faster carrier integration
Connect USPS carrier accounts
Easily connect your carrier accounts to start shipping in minutes. Support carriers worldwide.
- Access to carriers
- 24/7 live chat
- Setup in minutes
USPS shipping APIs
The #1 multi-carrier shipping APIs designed for developers to integrate fast with USPS and carriers worldwide.
- USPS technical support (24/7 live chat)
- USPS API documentations
- Free USPS developer account
Apps & plugins for USPS shipping
Connect USPS with other applications easily, including Shopify, Magento, and WooCommerce.
- Seamless integration with carriers
- Save development cost
- Free order management