Iran has a land area of approximately 1,648,195 square kilometers (636,372 square miles). In comparison, the United States has a land area of about 9,833,517 square kilometers, which makes the U.S. roughly 6 times larger than Iran. More specifically, Iran is about 16.76% the size of the United States or about one-sixth the equivalent land area of the U.S. Iran's size is nearly as large as the state of Alaska in the U.S.