They are short for "Excel Spreadsheet."
The extension xls is a spreadsheet and xlt is a template. A template is a pre-designed layout for an Excel spreadsheet.
Normally xls is the extension for an Excel spreadsheet document.
A spreadsheet that you create and save with Excel is an example of a file.
Every Excel workbook (spreadsheet or spreadsheets) has a file to store all the information of the workbook.Example: Suppose you have created a Student workbook then the name of file is student.doc/docx/etc.The file extension of the file depends upon the version of MS Excel.
A document that is created by Microsoft Excel. Excel is a spreadsheet maker.
The extension for excel is .xls
XLS is the common extension for an MS Excel (tm) spreadsheet. Therefore chances are the reference you and/or your computer is referring to is an Excel Spreadsheet. To open this file format you must have either MS (Microsoft) Excel standalone, or MS Office installed on your computer.
You can transfer a PDF file into an excel file but simply copy and pasting the information into the excel program to create your spreadsheet. If this does not work there is no option.
When you create a spreadsheet or workbook then a corresponding file is created on your machine, that file is known as excel file.
.WKS
Excel file is called a .xls file. Or a spreadsheet file.