The kroon was the official currency of Estonia for two periods in history: 1928–1940 and 1992–2011. Between 1 January and 14 January 2011, the kroon circulated together with the euro, after which the euro became the sole legal tender in Estonia. The kroon was subdivided into 100 cents.

The krone, plural kroner, is the currency of the Kingdom of Norway. It was traditionally known as the Norwegian crown in English; however, this has fallen out of common usage. It is nominally subdivided into 100 øre, although the last coins denominated in øre were withdrawn in 2012.