The kroon (sign: kr; code: EEK) was the official currency of Estonia for two periods in history: 1928 -1940 and 1992 - 2011. The kroon was subdivided into 100 cents (senti; singular sent). The word kroon is related to that of the Nordic currencies (such as the Swedish krona and the Danish and Norwegian krone) and derived from the Latin word corona ("crown"). The kroon succeeded the mark in 1928 and was in use until the Soviet invasion in 1940 and Estonia's subsequent incorporation into the Soviet Union when it was replaced by the Soviet ruble.
After Estonia regained its independence, the kroon was reintroduced in 1992.
Between 1 January and 14 January 2011, the kroon circulated together with the euro. On 15 January 2011 the kroon ceased to be legal tender.