Check whether a Switzerland IBAN is valid — country, length and mod-97 checksum — and break out the bank details. Instant and free, right in your browser.
| Country | Switzerland (CH) |
| IBAN length | 21 characters |
| Structure | CH + 2 check digits + 17-character BBAN |
| Valid example | CH41 7654 3210 9876 5432 1 |
Every Switzerland IBAN starts with CH and is 21 characters long. The two digits after the country code are a checksum (ISO 7064 mod-97) computed from the rest of the number, so a single mistyped character makes the whole IBAN invalid — which is exactly what this validator catches before a payment is sent.
A Switzerland IBAN is exactly 21 characters long, beginning with the country code CH followed by two check digits and the national bank account number (BBAN).
A correctly-formed example is CH41 7654 3210 9876 5432 1. The two digits after CH are a mod-97 checksum that must match the rest of the number.
By confirming it is 21 characters, starts with CH, and passes the ISO 7064 mod-97 checksum. The tool above does all three instantly, in your browser — no data is sent anywhere.