Documents
Free Bank Account Format Checker
Sanity-check a list of bank account numbers for payroll files: digit-only, expected length, duplicates, and lost leading zeros.
Calculator
How it’s calculated
- Each line is checked: digit-only (after optionally stripping spaces/dashes), length within your min–max, duplicate account numbers, and a lost-leading-zero hint when a value is all-digit but shorter than expected.
- Generic check only — it does not encode any specific bank's numbering rules. Set the expected length and confirm against your bank's file spec.
This tool gives an estimate for planning. Check the result against your own records before acting on it.
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