The unit of currency in Honduras is the Lempira. A lempira is equivalent to 100 centavos. Notes are in denominations of L500, 100, 50, 20, 10, 5, 2 and 1. Coins are in denominations of 50, 20, 10, 5, 2 and 1 centavos. A real is one-eighth of a Lempira, and is used colloquially, though such a coin does not exist. You should take US Dollars if you wish to exchange for Lempira. This can be done at banks, bureaux de change and major hotels.
American Express, Diners Club, MasterCard and Visa are accepted. Some banks offer cash withdrawal with Visa or Mastercard.
As of 10/5/2012 1 Euro is 24.2 Lempira but please check here for the latest rate.