◇Free
IBAN checksum checker
Check formatting, known country length and mod-97 checksum only.
Check formatting, known country length and mod-97 checksum only. Normalize spacing and case, inspect the country code and compute the rearranged mod-97 check. Known country lengths are reported separately from checksum validity.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Input: GB82 WEST 1234 5698 7654 32
Example result
{
"country": "GB",
"length": 22,
"expectedLength": 22,
"checksumValid": true,
"lengthValid": true
}Limitations and details
Unknown country lengths are reported as unknown; no bank lookup, account existence check or transfer validation is performed.
Inputs and options
- Input
- Text
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.