Performance becomes an issue with large datasets too. A poorly written macro can bog down Excel and take forever to complete, ...

This file contains advanced excel formulas and functions like Vlookup with match function, index and match function, offset & counta, logical operators, max if function, formula formatting, text ...

The functions are located under the 'Formulas' tab under the 'Barcode Function Library' group (see images). All check digits are auto-calculated.