Free ABA Routing Number Validator
Check a nine-digit US routing transit number checksum.
ABA Routing Number Validator
Enter a value to begin.
How to use this aba routing number validator
- Enter the nine digits printed for an ACH or cheque routing number.
- Check the inputs and preview, then use the primary action.
- Download, copy or use the result shown by the tool.
How the result is calculated
A checksum pass does not confirm that the institution exists, the route is active or it is appropriate for a particular transfer.
All calculation and transformation work happens in this browser tab. No entered value is sent to an Noler Tools application server.
Important limitations
Results are provided for convenience and should be checked independently before an important decision. A format or checksum result never authenticates an identity, document, account, licence, vehicle or registration.
Frequently asked questions
Is this aba routing number validator free?
Yes. It is free to use and does not require an account.
Does Noler Tools save my input?
No. The input and result remain in temporary browser memory and are not uploaded or saved by this site.