Free Shipping & Postage Calculators

Shipping rates change frequently and comparing costs across carriers is a hassle. Our shipping calculators pull together publicly available rate data from USPS, FedEx, and UPS so you can compare options side by side without jumping between carrier websites.

Our USPS shipping calculator and USPS postage calculator are our most-used tools, handling over 70,000 monthly searches combined. Whether you are mailing a letter, shipping a package via Priority Mail, or comparing Ground Advantage rates, these calculators show estimated costs based on weight, dimensions, and destination.

For business shippers and frequent senders, our FedEx shipping calculator and UPS shipping calculator estimate costs for ground, express, and overnight services. The USPS publishes updated rate tables regularly, and we keep our estimates aligned with the latest published rates.

Planning international shipping or curious about flight distances? Our air miles calculator calculates the distance between any two cities worldwide, which is useful for estimating both shipping costs and frequent flyer miles. Whether you ship once a month or run an e-commerce business, having quick rate comparisons saves time and money.