Excel Sheet Uppercase Conversion

I have an existing Excel workbook where every text entry—across all columns and rows—must be converted to UPPERCASE. Nothing else about the file should change: formulas, number formats, cell widths, and conditional formatting must remain intact... (Budget: ₹750 - ₹1250 INR, Jobs: Copy Typing, Copywriting, Data Entry, Data Processing, Excel, PDF, Visual Basic, Word)