How many stamps required for mail

The number of stamps required for 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 oz): 1 stamp (currently $0.55) for the first ounce, plus $0.15 for each additional ounce

Priority Mail

• Small boxes (up to 1 lb): 1 stamp (currently $7.50)
• Medium boxes (1-2 lbs): 2 stamps (currently $15.00)
• Large boxes (2-3 lbs): 3 stamps (currently $22.50)
• Extra Large boxes (3-4 lbs): 4 stamps (currently $30.00)

Priority Mail Express

• Small boxes (up to 1 lb): 2 stamps (currently $25.50)
• Medium boxes (1-2 lbs): 3 stamps (currently $38.50)
• Large boxes (2-3 lbs): 4 stamps (currently $51.50)
• Extra Large boxes (3-4 lbs): 5 stamps (currently $64.50)

International Mail

• First-Class International Mail: 1 stamp (currently $1.20) for the first ounce, plus $0.20 for each additional ounce
• Priority Mail International: 1 stamp (currently $24.95) for the first pound, plus $4.95 for each additional pound

Special Services

• Certified Mail: add $3.45 to the regular postage rate
• Return Receipt: add $1.45 to the regular postage rate
• Signature Confirmation: add $3.45 to the regular postage rate

Please note that these rates are subject to change, and you should always check the current rates with the United States Postal Service (USPS) or a local post office for the most up-to-date information.