How much stamp for first class mail

The cost of a First Class Mail stamp in the United States varies depending on the weight and size of the mailpiece. As of 2022, the current rates for First Class Mail are:

• Letter (1 oz): $0.55
• Large Envelope (1 oz): $0.55
• Flat (1 oz): $1.00
• Letter (2 oz): $0.70
• Large Envelope (2 oz): $0.70
• Flat (2 oz): $1.15
• Letter (3 oz): $0.85
• Large Envelope (3 oz): $0.85
• Flat (3 oz): $1.30

Please note that these rates are subject to change, so it's always a good idea to check the official USPS website or consult with a postal worker for the most up-to-date information.

Additionally, if you're sending a mailpiece that weighs more than 3 oz, you'll need to use a larger envelope or a package, and the cost will be higher.