Guatemala's currency is the quetzal, which is denoted by Q*. Quetzal bills come in denominations of 1, 2, 5, 10, 20, 50, and 100. The exchange rate is usually around *Q7.5 - Q*8 to 1 US$. Coins come in demoninations of 1, 5, 10, 25, and 50 *centavos, as well as a Q*1 coin. You may have difficulty breaking larger bills (Q*100, for example) in smaller towns — bring smaller bills to these places if posible.