CZK-Czech Koruna. Czech Republic, Koruna. The Czech Koruna is the currency of Czech Republic. Our currency rankings show that the most popular Czech Republic Koruna exchange rate is the EUR to CZK rate.The currency code for Koruny is CZK, and the currency symbol is Kč. Below, you'll find Czech Koruna rates and a currency converter.ZK-Czech Koruna. Czech Republic, Koruna. The Czech Koruna is the currency of Czech Republic. Our currency rankings show that the most popular Czech Republic Koruna exchange rate is the EUR to CZK rate.