Account number tools
Validate a domestic account number and its national check digits - currently Hungary, with more countries planned - or find any bank’s BIC by name. Everything runs in your browser - what you type is never sent to a server.
Domestic account check (Hungary)
16 or 24 digits (8-8 or 8-8-8 blocks). Dashes and spaces are fine - checked only in your browser.
Find a BIC by bank name
Type part of a bank’s name; results appear as you type, entirely in your browser.
Checking a domestic account number
A Hungarian account number (pénzforgalmi jelzőszám) is written in two or three eight-digit blocks: 11773016-11111018 or 11773016-11111018-00000000. The first three digits are the bank's GIRO code, the next four the branch, and the eighth digit checks that first block. This tool verifies that mandatory bank/branch check digit as a hard requirement, then checks the account block's digit as a warning-level test, because the account check digit is bank-specific and not every bank issues numbers that satisfy the common scheme. Where the number is valid it also identifies the bank, shows its BIC, and offers the composed IBAN - the same 16→24 zero-padding and mod-97 the IBAN calculator uses.
Finding a BIC from a bank name
Need the BIC / SWIFT code for a transfer but only know the bank's name? Pick the country and start typing. Matching is accent- and case-insensitive (so "granit" finds "Gránit") and understands common abbreviations such as "K&H". The result list shows the bank, its national code and its BIC with a copy button.
As with every tool here, a structurally valid number is not proof that an account exists or belongs to a given person - confirm the payee through your bank's Verification of Payee check before sending money.
Frequently asked questions
How is a Hungarian account number validated?
A Hungarian domestic account number is 16 (8+8) or 24 (8+8+8) digits. Each 8-digit block ends in a check digit computed with the weights 9,7,3,1 (repeating) modulo 10. The first block is the bank and branch routing code and its check digit is always valid, so a failure there is a hard error. The account block check digit is used by most but not all banks, so a mismatch there is shown as a warning, not an error.
What is the difference between this and the IBAN calculator?
The IBAN calculator turns an account number into a full IBAN. This tool focuses on the domestic number itself: it verifies the GIRO check digits, tells you which bank the number belongs to and its BIC, and, as a bonus, offers the composed IBAN. Both run only in your browser.
Is the BIC search private?
Yes. The bank name you type never leaves your browser. When you pick a country, the whole bank list for that country is downloaded once (only the 2-letter country code appears in that request) and the search runs locally against it.