The USPS international shipping calculator is the free “Calculate International Prices” tool on usps.com. You choose the destination country, enter your ZIP code, the package shape, weight and value, and it lists every USPS service available to that country with its expected delivery time and retail price. Prices depend on weight, destination and service, so the calculator is the only reliable way to price a specific package.
This page explains how to use the calculator and read its results. For domestic packages, use our USPS shipping cost calculator guide instead, and for how international prices are structured, see USPS international shipping rates.
How Does the USPS International Shipping Calculator Work?
The calculator matches your package’s details against the services USPS offers to the destination country. It filters out services the package doesn’t qualify for, for example because it’s too heavy for that country’s limit or too valuable for First-Class Package International Service, and shows the rest side by side.
Results show retail prices, the price you’d pay at a Post Office counter. Labels bought online through Click-N-Ship or a shipping platform may be priced at lower commercial prices, which the retail calculator doesn’t show. Our page on USPS commercial pricing explains who qualifies.
What Information Do You Need Before You Start?
Have these details ready so the result matches what you’ll pay:
- Destination country. Service availability and limits vary by country, and USPS suspends service to some destinations.
- Your ZIP code. The calculator uses it to confirm the mailing origin.
- Shape and size. Choose letter, large envelope or package, and enter length, width and height in inches for boxes.
- Weight. Weigh the packed item, including the box and padding, in pounds and ounces.
- Value of contents. The calculator uses it to filter services, such as First-Class Package International Service, which accepts goods worth up to $400.
Before you buy postage, also confirm the item is allowed in the destination country. Each country’s page in the USPS International Mail Manual lists prohibited and restricted items, and our guide to USPS shipping restrictions covers the common ones.
Which Services Will the Calculator Show?
Most destinations show three or four USPS international services. The table compares their delivery commitments and limits, not prices, since prices change with weight and country.
| Service | Expected delivery | Max weight | Tracking | Included insurance |
|---|---|---|---|---|
| Priority Mail Express International | 3–5 business days to many countries | Up to 70 lb (varies by country); Flat Rate Envelope 4 lb | Yes, limits in some countries | Up to $200 merchandise, $100 documents |
| Priority Mail International | 6–10 business days | Up to 70 lb (varies by country); Flat Rate Box 20 lb | Yes, limits in some countries | Up to $200 merchandise, $100 documents (not Flat Rate Envelopes or Small Flat Rate Boxes) |
| First-Class Package International Service | Varies by destination | 4 lb; contents value up to $400 | Not standard; delivery confirmation to select countries when bought online | Not available |
| First-Class Mail International | Varies by destination | Letters, large envelopes and postcards; documents only | No | Not available |
Global Express Guaranteed, the fastest USPS international option in the past, has been suspended since September 29, 2024, so it no longer appears in results. Money-back, date-certain delivery is available with Priority Mail Express International only to select destinations, and only when you pay and mail at a Post Office. Our USPS international shipping guide covers each service in more depth.
How Do You Read the Calculator’s Results?
Each result shows a service name, an expected delivery range and a price, often with several packaging choices under one service. Here’s how to compare them.
- Flat Rate vs. weight-based. Priority Mail International Flat Rate boxes are priced by destination regardless of weight, up to the box’s limit. Dense items often cost less in a Flat Rate box, while light, bulky items may cost less by weight.
- Expected days are estimates. Customs clearance and the destination postal service add time that USPS doesn’t control.
- Insurance. Included coverage varies by service. Extra coverage can be added for valuable items, up to the limit for that country; our USPS insurance guide explains claims.
- Missing services. If a service you expected isn’t listed, the package may exceed that country’s weight or size limit, or USPS may have suspended it there.
When the results look close, compare delivery time and tracking first. A slower service with limited tracking can cost more in lost-package hassle than it saves in postage.
What Changes the Price the Calculator Shows?
USPS groups countries into price groups, so two countries in the same region can cost very different amounts. Within a price group, weight is the main driver for weight-based services.
Size matters too. Large but light packages may be priced on dimensional weight rather than actual weight, and some countries set lower maximum weights or sizes than the USPS service limit. The IMM country listing for each destination shows those limits, for example 44 lb for Priority Mail International to Taiwan and 66 lb to the United Kingdom.
For ways to bring the total down, see our guides to the cheapest international shipping rates and cheap international shipping for small businesses.
What Customs Information Do You Need After Calculating?
Every international package needs an electronic customs declaration, which you complete when you create the label online or at the Post Office counter. USPS now asks for more detailed descriptions of contents, and its “Look Up HS Codes” tool helps you find the Harmonized System code for each item.
- Describe each item specifically, such as “cotton T-shirt” rather than “clothing.”
- Enter quantity, value and weight for each item, plus the country of origin.
- Choose the category: gift, merchandise, documents, returned goods or sample.
- Keep the value accurate, because it affects duties and insurance claims.
Duties and taxes are set by the destination country and are usually paid by the recipient. The USPS calculator shows postage only, not those charges.
How Do You Track and Prove Delivery of an International Package?
Priority Mail Express International and Priority Mail International include USPS Tracking to most countries, with a 13-character number ending in “US.” Look it up with your USPS tracking number on usps.com; once the package reaches the destination country, that country’s postal service handles the final scans.
If you need a signed record, some international services allow a return receipt; see our guide to the USPS return receipt for proof of delivery. To avoid a Post Office trip, you can also schedule a free USPS pickup for international packages with prepaid labels.
Can You Pay Less Than the Calculator’s Retail Price?
Yes. The usps.com calculator shows retail prices, and commercial prices for online labels are often lower. Our guide on how to calculate a USPS shipping discount explains the gap, and our USPS shipping rates calculator page covers domestic comparisons.
ParcelPath is free, with no subscription, per-label fee or minimums, and offers up to 89% off USPS and up to 85% off UPS. To see commercial pricing instead of retail, compare USPS international rates for your package in the ParcelPath rate calculator. For more money-saving ideas, see our guide to how to ship for less, our list of USPS services and shipping options, and our roundup of shipping services and solutions.
Frequently Asked Questions
Is the USPS international shipping calculator free?
Yes. The USPS international shipping calculator on usps.com is free to use and doesn’t require an account. It shows retail prices and expected delivery times for each USPS service available to your destination country. Labels bought online may be priced lower than the retail figures it shows.
Why doesn’t the calculator show every USPS international service?
The calculator only lists services your package qualifies for. A service disappears if the package exceeds that country’s weight or size limit, if the contents’ value is above $400 for First-Class Package International Service, or if USPS has suspended the service to that destination.
Does the USPS international calculator include customs duties?
No. The USPS international shipping calculator shows postage only. Duties, import taxes and any clearance charges are set by the destination country and are usually paid by the recipient on delivery. Accurate item descriptions, values and HS codes on the customs declaration help the package clear without delays.
What’s the heaviest package USPS ships internationally?
Priority Mail Express International and Priority Mail International accept packages up to 70 pounds, but many countries set lower limits, such as 44 pounds to Taiwan or 66 pounds to the United Kingdom. First-Class Package International Service is limited to 4 pounds.
Sources
- USPS: International Mail and Shipping Services
- USPS International Mail Manual 140: International Mail Categories
- USPS IMM Individual Country Listing: Taiwan
- USPS IMM Individual Country Listing: United Kingdom
- USPS International Service Alerts
Part of our USPS International Shipping guide. Related: Priority Mail International, Priority Mail Express International, First Class Package International.
