STC File Extension

OpenOffice.org Calc Spreadsheet Template Format
- File Type stc
- Developer Adobe Systems
- Popularity
- Application StarOffice
- Category Spreadsheet Files
What is a STC file?
OpenOffice.org Calc Spreadsheet Template Format, identified by the STC extension, is a Spreadsheet Files type and includes 113 files.
The OpenOffice.org Calc Spreadsheet Template Format (STC) was created by Adobe, a company that developed file format and produced 81 programs for their use.
STC files are supported by Windows, Mac OS and Linux. If you need to open a STC file, you can use one of 7 programs, such as StarOffice, LibreOffice Calc and NeoOffice.
Programs that support STC files
How to open a STC file?
If you’re having difficulty opening a STC 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 STC files are StarOffice, LibreOffice Calc and NeoOffice. To install the current version of StarOffice, go directly to the official Oracle website. The universal package for all operating systems is available there.
Following installation, STC files should be automatically opened with StarOffice.
Set StarOffice as the default STC program
Changing the default program in Windows
- Right-click your STC file, then navigate to the "Open With" option and click "Choose Another Application" to continue;
- In the pop-up window, select the StarOffice application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening STC files.
Change Default Program on Mac
- Right click or Control + left click on the desired STC file;
- Select "Open in application" and click "Other";
- Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
- Within this menu select "All Programs" and navigate to StarOffice. Check the box next to "Always open in app" to make sure it’s the default option.
Convert to and from STC
For difficult STC files, try converting them to formats like JPEG, PDF, CSV, DIF or similar formats to improve usability.
Please note that after converting a STC 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 STC files to various formats without losing data quality.
Convert STC to other file formats
Solve problems with STC files
When issues arise with STC 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 STC file?
Corrupted STC spreadsheet files may have one or more of the following symptoms:
- Unexpected expansion of the total size of the STC file;
- Opening or processing the file in StarOffice 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 OpenOffice Calc;
Why does StarOffice crash or shut down frequently?
StarOffice crashes can occur due to outdated software versions. To mitigate this, install the latest updates for Oracle 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 STC file?
Open the damaged STC 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 STC file?
To edit STC files, you need to install specialized software that allows you not only to open but also to modify spreadsheet files. Online STC editors usually provide fewer features than software created specifically for OpenOffice.org Calc Spreadsheet Template Format.
List of Top STC editors 2026
Taking into account the provided details, we have prepared a list of STC editors that match your needs.
| STC Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| IBM Lotus Symphony | IBM | Windows | 4.8 out of 5 (39 reviews) |
| LibreOffice Calc | TDF | Windows, Mac OS, Linux | 4.8 out of 5 (34 reviews) |
| NeoOffice | Planamesa | Mac OS | 4.5 out of 5 (42 reviews) |
| OpenOffice Calc | OpenOffice | Windows, Mac OS, Linux | 4.5 out of 5 (46 reviews) |
| StarOffice | Oracle | Windows | 4.5 out of 5 (39 reviews) |










