How much weight to mail a letter

The weight of a letter that can be mailed without additional postage depends on the destination and the type of mail service used. Here are some general guidelines:

First-Class Mail

• Letters weighing up to 1 ounce (28.35 grams) can be mailed with a single Forever Stamp (currently $0.55).
• Letters weighing 1-2 ounces (28.35-57.15 grams) require an additional 15 cents in postage.
• Letters weighing 2-3 ounces (57.15-85.85 grams) require an additional 30 cents in postage.

Priority Mail

• Letters weighing up to 1 pound (453.59 grams) can be mailed with a Priority Mail Flat Rate Envelope (currently $7.50).
• Letters weighing over 1 pound require additional postage based on the actual weight.

International Mail

• Letters weighing up to 1 ounce (28.35 grams) can be mailed with a single Global Forever Stamp (currently $1.20).
• Letters weighing 1-2 ounces (28.35-57.15 grams) require an additional 15 cents in postage.
• Letters weighing over 2 ounces require additional postage based on the actual weight.

Special Cases

• If you're mailing a letter with a large or irregular shape, it may be considered a package and require additional postage.
• If you're mailing a letter with a special handling request, such as certified mail or return receipt requested, additional postage may be required.

Remember to always check with the USPS website or consult with a postal worker if you're unsure about the weight and postage requirements for your letter.