OTS File Extension

What is OTS file?

OTS (OpenDocument Spreadsheet Template) is a template file format used by Calc software application. Now it is chiefly used by Apache OpenOffice, but many spreadsheet programs support this format. The format definitions is based on XML as specified by OASIS Open Document. Template files can be generated from any document file. By default, opening a template file from system shell opens a new document file based on the template.

Templates and their usage

OTS file can serve as a base for generating any number of new ODS documents files with given style and formatting. Beside formatting settings, a template file can define default settings for various types of documents, such as shipping manifests or accounting documents. Additionally users can download predefined templates for popular types of documents.

Programs which support OTS file extension

Below you will find an index of software programs that can be used to open OTS files divided into 3 categories according to system platform supported. OTS files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 12/06/2023

How to open file with OTS extension?

There can be multiple causes why you have problems with opening OTS files on given system. On the bright side, the most encountered issues pertaining to OpenDocument Spreadsheet Template files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with OTS files.

Step 1. Get the OpenOffice.org Calc

Problems with opening and working with OTS files are most probably having to do with no proper software compatible with OTS files being present on your machine. This issue can be addressed by downloading and installing OpenOffice.org Calc or different compatible program, such as LibreOffice Calc, StarOffice, IBM Lotus Symphony. The full list of programs grouped by operating systems can be found above. The safest method of downloading OpenOffice.org Calc installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of OpenOffice.org Calc

If you already have OpenOffice.org Calc installed on your systems and OTS files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why OTS files are not compatible with OpenOffice.org Calc. The most recent version of OpenOffice.org Calc is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate OpenDocument Spreadsheet Template files with OpenOffice.org Calc

If the issue has not been solved in the previous step, you should associate OTS files with latest version of OpenOffice.org Calc you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the OTS file
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where OpenOffice.org Calc is installed, check the Always use this app to open OTS files box and conform your selection by clicking OK button

The procedure to change the default program in Mac OS

• Right-click the OTS file and select Information
• Find the Open with option – click the title if its hidden
• Select OpenOffice.org Calc and click Change for all...
• Finally, a This change will be applied to all files with OTS extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Verify that the OTS is not faulty

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the OTS file in question. Being unable to access the file can be related to various issues.

1. The OTS may be infected with malware – make sure to scan it with an antivirus tool.

If the file is infected, the malware that resides in the OTS file hinders attempts to open it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. OTS file is infected with malware? Follow the steps suggested by your antivirus software.

2. Verify that the OTS file’s structure is intact

If you obtained the problematic OTS file from a third party, ask them to supply you with another copy. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. When downloading the file with OTS extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open OpenOffice.org Calc

The operating systems may note enough free resources to run the application that support OTS files. Close all running programs and try opening the OTS file.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with OpenDocument Spreadsheet Template files. It may be the case that the OTS files work properly with updated software that addresses some system bugs.

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