Slovakia IBAN calculator and checker

A Slovak IBAN has 24 characters: SK, two check digits, then the bank code (kód banky), prefix (predčíslie) and account number (číslo účtu). Enter the local details to build one, or paste an IBAN to check it, all in your browser.

Calculate or check a Slovak IBAN

Enter the bank code (kód banky), prefix (predčíslie) and account number (číslo účtu). The calculator pads short numbers with zeros, works out any national check digits you leave empty and adds the two IBAN check digits.

Switch to Check to paste an IBAN instead: it tests the length, characters, check digits and national check, and shows the bank, branch and account parts. Nothing you type leaves the page.

SK IBAN format

A Slovak IBAN is 24 characters: SK, two check digits, then the bank code (kód banky), prefix (predčíslie) and account number (číslo účtu).

In the printed format, k marks the check digits, a and b the bank, s the branch, sort code or prefix, c the account number and x a national check character.

IBAN length
24 characters
Check digits
2 digits after SK
Bank code (kód banky)
4 digits
Prefix (predčíslie)
6 digits
Account number (číslo účtu)
10 digits
National check digit
Prefix and number each pass a modulo 11 test
SEPA
Yes, EU member
Printed format
SKkk bbbb ssss sscc cccc cccc
Example IBAN
SK31 1200 0000 1987 4263 7541

Frequently asked questions

  • 24 characters: SK, two check digits, then the bank code (kód banky), prefix (predčíslie) and account number (číslo účtu). Printed in groups of four, it looks like SK31 1200 0000 1987 4263 7541.

  • A Slovak account is written prefix-number/bank code, such as 19-8742637541/1200. Pad the prefix (predčíslie) to six digits and the number to ten, put the four-digit bank code in front and add SK and the check digits: SK31 1200 0000 1987 4263 7541.

  • Yes. Slovakia is an EU member state, so it is in SEPA: euro payments to a Slovak IBAN can go by SEPA credit transfer.

  • With the ISO 7064 mod 97-10 algorithm. The bank code (kód banky), prefix (predčíslie) and account number (číslo účtu) and the country code SK are turned into digits, and the two check digits are chosen so the whole number leaves a remainder of 1 when divided by 97. The calculator does this for you and rejects any input that cannot make a valid SK IBAN.

  • Yes. The calculator and the checker run entirely in your browser: the details you enter are never sent to a server, stored or shared. There is no sign-up and no fee.

  • Yes. The calculator covers 41 countries and the checker all 89 in the SWIFT IBAN registry. Pick a different country in the form above, or open its page from the list below.

Paying an IBAN from stablecoins? Holyheld Business converts USDC to EUR and pays it out by SEPA. See pricing or the guide to off-ramping USDC to an IBAN.

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