The ISO 4217 code for the Swedish krona is SEK.
ISO 4217 gives currencies standardized three-letter codes for international banking, exchange markets and accounting. SEK identifies Sweden’s krona; the first two letters correspond to Sweden, while K refers to krona. The everyday symbol is kr, so prices may show both the code and the symbol in different contexts.
The modern krona was introduced in 1873 when Sweden joined the Scandinavian Monetary Union with Denmark and Norway. Although the union later dissolved, Sweden retained the krona. The currency is issued by Sveriges Riksbank, Sweden’s central bank.
One krona is theoretically divided into 100 öre. However, Sweden discontinued its final sub-krona coin, the 50-öre coin, in 2010. Cash totals are therefore rounded to the nearest krona, even though prices may still be listed with öre values.
DKK is Denmark’s krone code, NOK is Norway’s krone code, and SKK was the former code of Slovakia’s koruna.