
How to Convert Old Excel Files to a New Format (2 Suitable Ways)
Old Excel files typically use the .xls extension, which was the standard until Excel 2003. From Excel 2007 onward, Microsoft introduced .xlsx, a more advanced and secure format. .xlsx supports larger files, more rows/columns, and better integration with modern tools. Many businesses and individuals still have data stored in older Excel file formats like .xls. These files may open in newer Excel versions, but they lack modern features, compatibility, and































































































