International Stamp Price Calculator – Letter Postage by Country

International stamp prices vary by country. In the United States, a Global Forever Stamp costs $1.55 (2024 rate) and covers a 1 oz letter or postcard to any international destination. Canada Post charges approximately CA$2.71 for an international letter up to 30g. Royal Mail (UK) charges £2.20 for a standard international letter to non-European destinations (20g). Prices typically increase annually, so always check current rates with your national postal service.

Use this calculator above! Simply select your origin country, destination, mail type, and weight. The tool estimates the required postage and suggests stamp combinations. For USPS mail, one Global Forever Stamp ($1.55) covers a 1 oz international letter. For heavier items, add Additional Ounce stamps ($0.28 each). You can also use multiple domestic Forever Stamps ($0.73) — just ensure the total face value meets or exceeds the required postage.

The Global Forever Stamp is a USPS stamp that covers First-Class Mail International postage for a 1 oz letter or postcard to any country worldwide. As of 2024, it costs $1.55. It's "forever" — meaning it retains its value even if rates increase. You can purchase them at USPS.com, post offices, or authorized retailers. Other countries have similar products: Royal Mail offers International Standard stamps, and Canada Post sells Permanent™ international stamps.

Yes! You can use any combination of stamps as long as their total face value equals or exceeds the required international postage. For example, three US domestic Forever Stamps (3 × $0.73 = $2.19) would cover a 2 oz international letter ($2.00). However, using a single Global Forever Stamp is more convenient and often more economical for 1 oz letters. Always ensure stamps are valid and not previously used.

For USPS First-Class Mail International, the maximum weight for a letter is 3.5 ounces (approximately 100 grams). For large envelopes/flats, the maximum is 15.994 ounces. If your item exceeds these limits, you'll need to use Priority Mail International or another service class. Royal Mail allows up to 2kg for international letters. Canada Post allows up to 500g for standard international letters. Always check your origin country's specific weight limits, as they vary significantly.

It depends on the origin country. The USPS charges a flat international rate regardless of destination (with slight discounts for Canada and Mexico). Royal Mail (UK) differentiates between European and World destinations — European rates are cheaper. Canada Post has separate rates for US, International, and domestic mail. Australia Post uses zone-based pricing. This calculator accounts for these regional variations to give you an accurate estimate.

Delivery times vary widely by origin, destination, and service level. USPS First-Class Mail International typically takes 7-21 business days, though some destinations may take 4-6 weeks. Royal Mail International Standard aims for 3-5 working days to Europe and 5-7 working days worldwide. Canada Post estimates 4-7 business days to the US and 6-10 business days for other international destinations. For faster delivery, consider Priority Mail Express International or courier services.

First-Class Mail International (FCMI) is the most economical option for letters, postcards, and lightweight packages (up to 4 lbs). It includes basic tracking to select countries but no guaranteed delivery time. Priority Mail International (PMI) offers faster delivery (6-10 business days), full tracking, and included insurance. PMI is better for valuable or time-sensitive items but costs significantly more. For documents and letters under 3.5 oz, FCMI is usually the best choice.

You can purchase international stamps from multiple sources: 1) Your national post office (USPS, Royal Mail, Canada Post, etc.), 2) Official postal websites (USPS.com, royalmail.com, canadapost.ca), 3) Authorized postal retailers and pharmacies, 4) Online marketplaces like Amazon (verify seller authenticity), 5) Some office supply stores. For USPS Global Forever Stamps, you can also order by phone at 1-800-STAMP24. Many postal services now offer printable online postage as well.

For USPS, yes — international postcards and 1 oz letters both cost $1.55 (Global Forever Stamp rate). However, postcards must meet specific size requirements (max 6" × 4.25" for the lower rate). For Royal Mail, postcards and letters up to 20g share the same rate structure. Some countries offer slightly lower rates for postcards compared to letters, but this varies. Always verify with this calculator by selecting the appropriate mail type for accurate pricing.