The subunits of the dollar are known as cents. In the United States, one dollar is equal to 100 cents. Cents are often represented by the symbol "¢" and come in various coin denominations, including the penny (1 cent), nickel (5 cents), dime (10 cents), and quarter (25 cents). Other countries that use the dollar, such as Canada and Australia, also have their own subunits, typically called cents as well. These currencies may have different values and coin denominations, but the concept of dividing the dollar into 100 smaller units remains consistent across these nations.