A standard First-Class Forever stamp costs 82 cents. These stamps never expire, even if prices go up. Other rates include 65 cents for postcards and $1.75 for international letters. You can buy or calculate exact costs using the USPS Postage Calculator.
Here are the details for common mailing needs:
- Forever Stamps: 82 cents (covers up to 1 ounce for standard letters).
- Domestic Postcards: 65 cents.
- Metered Letters: 78 cents (for 1 ounce).
- Additional Ounces: 29 cents each (for heavy letters).
- Large Envelopes (Flats): start at $1.69 (for up to 1 ounce).
- International Letters: start at $1.75 (for 1 ounce).
- International Postcards: $1.75.