USPS Shipping Calculator: Instantly Calculate Your USPS Shipping Costs
Use our free USPS shipping calculator below to quickly estimate the cost of sending your packages. Enter your package details, destination, and see the rates of popular USPS services like First Class Mail, Priority Mail, or Priority Mail Express. No signup required—get real-time USPS rates to make informed shipping decisions right now.
Calculate your shipping costs
How to Calculate USPS Shipping Rates
Step 1
Enter Package Information
Input your package weight and dimensions. Accurate measurements help ensure you get the most precise USPS shipping cost estimate.
Step 2
Provide Origin & Destination
Add the origin and destination ZIP codes. Our USPS shipping calculator factors in distance to find the best available rates.
Step 3
Compare USPS Service Options
Instantly see the costs for USPS First Class, Priority Mail, Priority Mail Express, or Ground Advantage. Compare prices, delivery times, and features to pick the best fit for your budget and timeline.
Popular USPS Services Explained
USPS First Class Mail
Perfect for lightweight packages under 1 lb, First Class Mail is a budget-friendly option with delivery typically in 2–5 days.
USPS Priority Mail
Offers faster delivery (1–3 days) and free USPS packaging. Great for small to mid-sized shipments that need reliable, cost-effective service.
USPS Priority Mail Express
For urgent packages, choose Priority Mail Express. Enjoy guaranteed overnight to 2-day delivery, tracking, and money-back guarantees.
USPS Ground Advantage
A cost-effective option for non-urgent shipments, Ground Advantage usually delivers in 2–5 days at lower rates.
Factors That Affect USPS Shipping Costs
Weight & Dimensions
Larger, heavier packages cost more.
Distance & Zones
The farther your shipment travels, the higher the rate.
Service Speed
Faster, guaranteed delivery options cost extra.
Extras & Add-Ons
Insurance, signature confirmation, and other services can increase the final price.
Additional Tips for Lowering USPS Shipping Prices
Use the Right Packaging
Optimize your box size to reduce dimensional costs.
Consider Flat-Rate Options
Priority Mail flat-rate boxes can simplify pricing for heavier shipments.
Compare Multiple Services
Adjust weight or box size to see if a different USPS service offers a better rate.
Consider Additional Carriers
USPS is very often not your only choice. It’s always worth checking the prices of other carriers like UPS or FedEx.
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Frequently asked questions
How do I calculate USPS shipping costs without signing up?
Does USPS charge by weight or size?
Can I ship internationally with USPS?
What is the cheapest USPS shipping method?
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