How many stamps for 2.6 oz?

The number of stamps required for a 2.6 oz letter depends on the current postage rates set by the USPS. As of 2023, a standard first-class stamp covers up to 1 oz, and each additional ounce typically requires an additional stamp or a specific fee. Therefore, you would need at least three stamps for a 2.6 oz letter: one for the first ounce and an additional two for the extra 1.6 ounces. It's always best to check the latest USPS rates for accuracy.