TDL File Extension

TDL file icon

Tab Delineated Format

What is a TDL file?

Tab Delineated Format, identified by the TDL extension, is a Spreadsheet Files type and includes 113 files.

TDL files are compatible with various operating systems, including Windows, Linux and Mac OS. There are 4 programs available to open a TDL file, including popular tools like Microsoft Excel, OpenOffice Calc and LibreOffice Calc.

How to open a TDL file?

If you are having trouble opening a TDL file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

Microsoft Excel, OpenOffice Calc and LibreOffice Calc are recognized as the most popular software solutions for dealing with TDL files. If you wish to install the latest release of Microsoft Excel, visit the official Microsoft portal and download the edition that works on any operating system.

Once Microsoft Excel is installed, the OS should configure it as the default tool for opening TDL files.

Set Microsoft Excel as the default TDL handler

Setting a default program by file type in Windows

  1. Right-click on your TDL file and choose the "Open With" option. Then click "Choose another app" to continue the process;
  2. In the pop-up window, find and select the Microsoft Excel application from the available options;
  3. Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening TDL files.

Choose an app to open a file on Mac

  1. Right click or use Control + left click on the desired TDL file to launch the file options menu;
  2. Select "Open in application" and click "Other";
  3. Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
  4. In this menu, select "All Programs" and search for Microsoft Excel. Check the box next to "Always open in app" to make it the default option.

How to edit a TDL file?

Editing TDL files requires installing professional software that lets you open and edit spreadsheet files. Online editors have more limitations compared to dedicated Tab Delineated Format programs.

List of Top TDL editors 2026

According to these factors, we have compiled a list of available TDL editors.

TDL Editor SoftwareDeveloperPlatformsOverall Rating
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)

Convert to and from TDL

If a TDL file is cumbersome, converting it to formats such as PDF, CSV, XLS, XLSX, ACCDB or other supported types can make it easier to manage.

Converting a TDL file may not fully retain all functionality, but it is generally possible to return it to the original format.

Convert TDL to other file formats

Effective solutions for TDL file problems

If TDL files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.

What are the possible solutions to recover a corrupt TDL file?

Start a data recovery program and open the damaged TDL file. Go to the menu and select the "Repair" option to repair the file. Allow the recovery process to complete, which will automatically repair the damaged spreadsheet files.

Are there any symptoms that my TDL file is damaged?

Corrupted TDL spreadsheet files may show the following signs:

  • Opening the file in Microsoft Excel or other programs causes them to hang or crash;
  • Error dialogs are displayed when interacting with the file;
  • Opening the file results in an error or a failed attempt;
  • Unexpected expansion of the total size of the TDL file;
  • Editing the archive in Microsoft Excel is accompanied by slow performance or delays;

What are the possible causes of Microsoft Excel crashing?

The absence of software updates can cause Microsoft Excel to crash. It is recommended to install the latest available updates for Microsoft products.

Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.