Switzerland IBAN calculator and checker

A Swiss IBAN has 21 characters: CH, two check digits, then the bank code (IID, bank clearing number) and account number. Enter the local details to build one, or paste an IBAN to check it, all in your browser.

Calculate or check a Swiss IBAN

Enter the bank code (IID, bank clearing number) and account number. 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.

CH IBAN format

A Swiss IBAN is 21 characters: CH, two check digits, then the bank code (IID, bank clearing number) and account number.

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
21 characters
Check digits
2 digits after CH
Bank code (IID, bank clearing number)
5 digits
Account number
12 characters
National check digit
None
SEPA
Yes, outside the EEA
Printed format
CHkk bbbb bccc cccc cccc c
Example IBAN
CH93 0076 2011 6238 5295 7

Frequently asked questions

  • 21 characters: CH, two check digits, then the bank code (IID, bank clearing number) and account number. Printed in groups of four, it looks like CH93 0076 2011 6238 5295 7.

  • Yes. The five-digit institution identification (IID), formerly called the bank clearing number, identifies the bank or branch and sits right after CH and the check digits. The 12-character account number that follows may contain letters.

  • Yes. Switzerland is in SEPA’s geographical scope although it is not in the EU or the EEA; it joined by EPC decisions taken between 2006 and 2013. Euro payments to a Swiss IBAN can go by SEPA credit transfer when the receiving bank takes part in the SEPA schemes. SEPA covers euro payments only, so a payment in Swiss franc goes outside it.

  • With the ISO 7064 mod 97-10 algorithm. The bank code (IID, bank clearing number) and account number and the country code CH 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 CH 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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