The dollar sign, also known as the peso sign, is a currency symbol consisting of a capital s crossed with one or two vertical strokes ($ or depending on typeface), used to indicate the unit of various currencies around the world, including most currencies denominated dollar or peso. 路 today, the dollar sign is a symbol of american power. For example, $20 represents twenty dollars. Learn how this unusual character evolved from colonial currency to the center of the financial system. The $ (dollar sign) symbol is used to represent various forms of currency around the world, most notably the united states dollar. Dollar sign, $, symbol that represents the dollar, the name of the standard monetary unit used in the united states, canada, australia, new zealand, and a number of other countries and territories. 路 discover the meaning and uses of the dollar sign ($) in computing, from its placement on keyboards to its role in programming languages and social networking.