How many stamps do you need to send mail

The number of stamps needed to send mail depends on the weight and size of the mailpiece, as well as the destination. Here are some general guidelines:

First-Class Mail

• Letters (up to 1 oz): 1 stamp (currently $0.55)
• Large envelopes (up to 1 oz): 1 stamp (currently $0.55)
• Flats (up to 13.5 oz): 1 stamp (currently $0.55) for the first ounce, plus $0.15 for each additional ounce

Priority Mail

• Small boxes (up to 70 lbs): 1 stamp (currently $7.50) for the first pound, plus $0.15 for each additional pound
• Medium boxes (up to 70 lbs): 2 stamps (currently $15.00) for the first 2 pounds, plus $0.15 for each additional pound
• Large boxes (up to 70 lbs): 3 stamps (currently $22.50) for the first 3 pounds, plus $0.15 for each additional pound

International Mail

• First-Class International Mail (up to 1 oz): 1 stamp (currently $1.20) for the first ounce, plus $0.20 for each additional ounce
• Priority Mail International (up to 70 lbs): 1 stamp (currently $24.95) for the first pound, plus $0.20 for each additional pound

Other Considerations

• If your mailpiece is oversized or irregularly shaped, you may need to use additional stamps or pay a surcharge.
• If you're sending mail to a military address, you may need to use a special stamp or pay a surcharge.
• If you're sending mail to a foreign country, you may need to use a special stamp or pay a surcharge.

It's always a good idea to check with your local post office or the USPS website for the most up-to-date pricing and guidelines.