We have found 2 software records in our database eligible for ._xls to .xls file format conversion.
Renaming _xls fie to xls should restore the full association and functionality of the file for Microsoft Excel spreadsheet files, no _xls to xls conversion is actually required.
If your._xls file is corrupted, it is likely that only renaming the suffix won't work. In that case you will have to search for some some Excel recovery software.
_XLS
Files with _xls extension are mostly worksbooks or their renamed backups from Microsoft Excel spreadsheet editor distributed as a part of Microsoft Office suite.
XLS
Files with xls extension are best known as spreadsheets from Microsoft Excel. A spreadsheet is basically a grid of cells sorted in rows and columns. Each cell can contain text, numeric or formula data. Excel XLS spreadsheets can be opened in most other similar programs, such as OpenOffice.org Calc.