| Enter
an ABA Routing Number and Hit 'Submit'. |
|
| Enter an ABA Routing Number and Hit 'Submit'. |
| |
Enter a nine digit valid ABA number. |
| |
|
| [view javascript] | [download database] |
| |
| The algorithm used to validate an ABA Routing Number consists of multiplying each digit, from left to right with the numbers 3, 7, and 1. Each multiplied value is then added up and the final number is divided by ten. The remainder should be zero. |
| |
1 |
|
2 |
|
3 |
|
1 |
|
2 |
|
3 |
|
1 |
|
2 |
|
3 |
|
|
| x |
3 |
|
7 |
|
1 |
|
3 |
|
7 |
|
1 |
|
3 |
|
7 |
|
1 |
|
|
|
| |
3 |
+ |
14 |
+ |
3 |
+ |
3 |
+ |
14 |
+ |
3 |
+ |
3 |
+ |
14 |
+ |
3 |
= |
60 |
| 60 ÷ 10 = 6 remainder 0 |
|
 |
| The bottom left most nine numbers of a check is the ABA number of a financial institution. |
|
| This page uses an iFrame to display the content pulled from a small database. Click here to see an AJAX version of the same page. |