Routing number checker: validate the nine digits
Check that a bank routing number has a valid format and check digit before you order checks or set up a payment. Runs in your browser; nothing is sent or saved.
What this checks
A routing number is nine digits. The first two digits must fall in a range used by the Federal Reserve, and the ninth digit is a check digit calculated from the other eight. A typo usually breaks one of those rules.
Find yours between the ⑆ transit symbols at the bottom left of a check, or in your online banking.
Next step
When the number is right, you are ready to order checks. Never type an account number on this page.
Order business checksHow this tool works
Weighted sum = 3 × (d1 + d4 + d7) + 7 × (d2 + d5 + d8) + (d3 + d6 + d9). The number is well formed when that sum is a multiple of 10 and the first two digits fall in 00 to 12, 21 to 32, 61 to 72 or 80.
Use the actual specification from your selected printer. Defaults are examples, not universal production requirements. These tools do not inspect a PDF, certify a print file, provide a price quote or predict sales.