Free check tool
Check a routing number
Test a nine-digit routing number against the ABA checksum in this browser. A passing result does not prove the account exists.
Routing number checker
Validates the 9-digit ABA checksum — right in this browser, never sent anywhere.
Enter nine digits.
What a checksum can tell you
A passing ABA checksum confirms only that nine digits have a valid mathematical structure. It does not confirm an account, ownership, account status, or that the number is the correct paper-check routing number. ACH and wire routing numbers can differ—confirm the paper-check number with the bank.