The official currency of the Czech Republic is the Czech crown (Kč / CZK) .CZK 1 = 100 halers, but you will be able to see these in the Czech Republic only on price labels. When you make payment you will not use halers or get them back in change. Prices are subject to rounding. Many shops, restaurants as well as tourist centres accept Euros.
Warning!
Never exchange money on the street. Don’t accept offers from people who are offering an excellent exchange rate outside of an exchange office, bank or different institution.