File Extension Library


.SLS3 File Extension

  • Developer by: Microsoft Corporation
  • Category: Spreadsheet and workbook Files

What are .SLS3 files and how to open them?

Can't open .SLS3 file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .SLS3 file.

What is a .SLS3 file extension?

.SLS3 file extension is created by Microsoft Corporation. .SLS3 has been classified as Spreadsheet and workbook Files.

.SLS3 is Microsoft Excel 3 for Mac template file

The SLS3 file extension is associated with Microsoft Excel, one of the most popular and powerful tool you can use to create format spreadsheets, graphs and much more.

The *.sls3 files were used in Microsoft Excel 3 for Mac for spreadsheet files.

The default file extensions, that are used by Microsoft Excel, are XLT or since Microsoft Office 2007 the XLTX.


How to open:

You will need a spreadsheet program with support for a specific file format in order to open your spreadsheets. Nevertheless, most non-proprietary formats are well-supported in modern spreadsheets programs.For general information please read:Basic info how to open spreadsheet files

How to convert:

Spreadsheets can be usually converted between various formats, or the data can be extracted and saved in structured text files, such as CSV (Comma Separated Value). Sometimes, export to a generatic database format is also possible. For general information please read:Basic info how to convert spreadsheet files

How to fix problems with .SLS3 files

  1. You need to update the application that you normally use to open .SLS3 files. Only the latest version of the software supports the current .SLS3 file format
  2. You need to check the .SLS3 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)