U.S. coins are the currency used in the United States for everyday transactions. They come in several denominations, including penny (1 cent), nickel (5 cents), dime (10 cents), quarter (25 cents), and half dollar (50 cents). Each coin features unique designs, often depicting important figures and symbols from American history. Coins are made primarily from metal alloys, with different compositions for each denomination. The U.S. Mint is responsible for producing these coins, ensuring they meet specific standards for weight and size. Coins are widely used in commerce and are an essential part of the U.S. economy.