How many stamps on a letter from US to Belgium?

The number of stamps required for a letter from the US to Belgium depends on the weight and size of the letter. As of my last update, a standard first-class letter weighing up to 1 ounce requires one Global Forever stamp, which covers international postage. For heavier letters, additional postage may be needed. It's best to check the USPS website or visit a post office for the most accurate and current postage rates.