XLT File Extension

XLT file icon

Excel Template

What is a XLT file?

Excel Template files, recognized by the XLT extension, fall into the Spreadsheet Files and Data Files categories, amounting to 6309 files.

The Excel Template (XLT) was created by Microsoft, a company that developed file format and produced 242 programs for their use.

XLT files are supported by Windows, Mac OS and Linux, as well as mobile phones such as Windows Phone, Android and Apple iOS. If you need to open a XLT file, you can use one of 13 programs, such as Microsoft Excel, LibreOffice Calc and IBM Lotus Symphony.

MIME types

  • application/xlt
  • application/excel
  • application/vnd.ms-excel
  • application/x-excel
  • application/msexcel
  • application/x-msexcel

How to open a XLT file?

If you’re having difficulty opening a XLT file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.

The most popular programs for working with XLT files are Microsoft Excel, LibreOffice Calc and IBM Lotus Symphony. To install the current version of Microsoft Excel, go directly to the official Microsoft website. The universal package for all operating systems is available there.

Following installation, XLT files should be automatically opened with Microsoft Excel.

Set Microsoft Excel as the default XLT program

Changing the default program in Windows

  1. Right-click your XLT file, then navigate to the "Open With" option and click "Choose Another Application" to continue;
  2. In the pop-up window, select the Microsoft Excel application;
  3. Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening XLT files.

Change Default Program on Mac

  1. Right click or Control + left click on the desired XLT file;
  2. Select "Open in application" and click "Other";
  3. Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
  4. Within this menu select "All Programs" and navigate to Microsoft Excel. Check the box next to "Always open in app" to make sure it’s the default option.

Convert to and from XLT

For difficult XLT files, try converting them to formats like PDF, CSV, XLS, DOC, XLSX or similar formats to improve usability.

Please note that after converting a XLT file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Using offline applications such as IBM Lotus Symphony, you can convert XLT files to various formats without losing data quality.

Convert XLT to other file formats

Solve problems with XLT files

When issues arise with XLT files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.

What are the telltale signs of a corrupt XLT file?

Corrupted XLT spreadsheet files may have one or more of the following symptoms:

  • Unexpected expansion of the total size of the XLT file;
  • Opening or processing the file in Microsoft Excel or other programs causes instability or crashes in the program;
  • The file shows errors when trying to open it or does not open completely;
  • While working with the file, error messages appear;
  • Poor performance when editing a file in Microsoft Excel;

Why does Microsoft Excel crash or shut down frequently?

Microsoft Excel crashes can occur due to outdated software versions. To mitigate this, install the latest updates for Microsoft products.

Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.

Is there any specific software or utility that can help repair a damaged XLT file?

Open the damaged XLT file with a recovery program, and then select the "Repair" menu item to start the repair process. Wait for the recovery process to finish, as it will automatically repair damaged spreadsheet files.

How to edit a XLT file?

To edit XLT files, you need to install specialized software that allows you not only to open but also to modify spreadsheet files. Online XLT editors usually provide fewer features than software created specifically for Excel Template.

List of Top XLT editors 2026

Taking into account the provided details, we have prepared a list of XLT editors that match your needs.

XLT Editor SoftwareDeveloperPlatformsOverall Rating
IBM Lotus SymphonyIBMWindows4.7 out of 5 (36 reviews)
Microsoft ExcelMicrosoftWindows, Mac OS, Apple iOS, Android4.7 out of 5 (37 reviews)
OpenOffice CalcOpenOfficeWindows, Mac OS, Linux4.6 out of 5 (44 reviews)
LibreOffice CalcTDFWindows, Mac OS, Linux4.4 out of 5 (32 reviews)
PlanMakerSoftMakerWindows4.4 out of 5 (39 reviews)
NeoOfficePlanamesaMac OS4.2 out of 5 (40 reviews)