* Forever stamps are tied to the current first-class postage rate. They are designed to cover the cost of sending a 1-ounce letter within the United States.
* Postage rates are based on weight and distance. A 6-ounce envelope would require more postage than a 1-ounce letter.
* USPS has a tiered pricing system. The cost increases as the weight goes up.
To calculate the correct number of Forever stamps:
1. Check the USPS website: Go to the USPS website and use their postage calculator tool. Enter the weight of your envelope and the destination zip code.
2. Determine the total postage required: The calculator will give you the exact amount of postage needed.
3. Divide the total postage by the value of a Forever stamp. This will tell you how many Forever stamps are needed.
For example:
If the USPS calculator tells you that a 6-ounce envelope to a specific location costs $4.50, and a Forever stamp is currently worth $0.60, you would need 7.5 Forever stamps. Since you can't use fractions of stamps, you would need to use 8 Forever stamps.
