OpenOffice.org spreadsheet
File type: Spreadsheet and workbook file
Files with sdc suffix can be found as spreadsheets from older versions of OpenOffice.org. Replaced by ODS format.
Found 7 different file type records with the same sdc filename suffix.
File type category:
Spreadsheet and workbook file
Date updated: October 6, 2026
Record marked as obsolete and not updated for a long time.
The sdc file extension was used for the default spreadsheet files in older versions of OpenOffice.org. It was also used by StarOffice StarCalc, including versions 3.0 through 5.0. An SDC file can contain spreadsheet data such as cells, formulas, formatting and other workbook content.
SDC is an obsolete spreadsheet and workbook format. OpenOffice.org and StarOffice replaced it with ODS, the OpenDocument Spreadsheet format. Modern spreadsheet suites such as Apache OpenOffice and LibreOffice can generally import these older files on Windows, macOS and other supported platforms.
Associated MIME types include:
application/soffice
application/x-soffice
application/x-staroffice
application/vnd.stardivision.calc
Open an SDC file with Apache OpenOffice Calc or LibreOffice Calc. These applications are available for multiple platforms and can import many older OpenOffice.org spreadsheets.
On Windows, compatible versions of Ashampoo Office, SoftMaker Office or PlanMaker may also open the file. NeoOffice can open it on macOS.
You can open these spreadsheets in almost any spreadsheet program.
Open the file in Apache OpenOffice Calc or LibreOffice Calc and use the Save As or Export command to create an ODS, XLSX or XLS file. Saving as ODS is the best choice when continued spreadsheet editing and formatting compatibility with OpenDocument software are important.
CSV is also suitable for exporting plain tabular data, but it does not preserve formulas, formatting or the complete workbook structure.
Englishapplication/vnd.stardivision.calcapplication/x-starcalc
Software applications that can open sdc files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
Software applications that can edit sdc files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
Software capable of saving sdc files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
Software apps that create sdc files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
Software apps that print sdc files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
Software applications that handle other tasks involving sdc files:
Microsoft Windows
Multiplatform
File type category:
Various data file
Date updated: November 4, 2026
The .sdc file extension identifies a stage-discharge curve data file associated with Autodesk applications, including Autodesk Civil 3D.
The file is stored in ASCII text format and contains data describing the relationship represented by a stage-discharge curve. Civil 3D uses this information when working with the related curve data.
Autodesk Civil 3D is available for multiple platforms, but support for this format depends on the applicable Civil 3D installation.
Open the .sdc file in Autodesk Civil 3D, the software associated with this format. Civil 3D can interpret the stage-discharge curve data for its intended workflows.
A plain-text editor can display the ASCII contents, but it will not interpret the curve data as Civil 3D does.
Because the format is ASCII text, its contents can be processed manually or with a custom script, but changing the text may make the file unusable in Civil 3D unless the required structure is preserved.
Software applications that can open sdc files:
Multiplatform
Software applications that can edit sdc files:
Multiplatform
Software capable of saving sdc files:
Multiplatform
Software apps that create sdc files:
Multiplatform
File type category:
Audio and sound file
Date updated: August 6, 2019
Record marked as obsolete and not updated for a long time.
The sdc file extension is also used by BigPond, an on-line music service and shop.
SDC is some sort of song file, most like DRM protected and used in some previous versions.
File type category:
GIS, GPS navigation and map file
Date updated: April 23, 2018
The sdc file extension is also related to one of the file types used in ESRI GIS software.
The sdc file represents a collection of Smart Data Compression (SDC) feature classes sharing attribute information with different geometries.
An SDC dataset is stored in a set of related files and contains multiple feature classes. SDC is the core data structure used in ArcGIS StreetMap, ArcIMS RouteServer, RouteMAP IMS, Business Analyst, and BusinessMAP.
Use compatible tools to work with *.sdc files.
Probably cannot be converted to anything else.
Software applications that can open sdc files:
Microsoft Windows
Software apps that create sdc files:
Microsoft Windows
Software applications that handle other tasks involving sdc files:
Microsoft Windows
File type category:
Encoded and encrypted file
Date updated: October 12, 2026
Microsoft Secure Download Cabinet archives were used by Microsoft's Developer Network Academic Alliance (MSDNAA) to distribute software packages to participating academic institutions.
The sdc file stores secured data for the software package. Its contents must be extracted with software that understands the Secure Download Cabinet format before the distributed files can be used.
Use the UnspackSDC 1.1 tool to open and unpack an sdc file. The tool is intended for Secure Download Cabinet archives and can extract their contents.
An sdc file is an archive, not a document format, so it is not normally converted to another format. Unpack it with UnspackSDC 1.1, then use or convert the extracted files with software that supports those individual file types.
File type category:
Configuration file
Date updated: July 30, 2019
The sdc file extension is associated with the Smart Diary Suite, a journal software for Microsoft Windows operating system that allows users to management their schedule.
The sdc file contains configuration.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software apps that manage or store settings in sdc files:
Microsoft Windows
Software applications that handle other tasks involving sdc files:
Microsoft Windows
File type category:
Backup file
Date updated: September 24, 2026
Stardock Central uses the SDC file format to package downloaded Stardock software and related installation data. The archive allows the client to retain the downloaded product files for installation or later use.
SDC files belong to Stardock Central on Microsoft Windows. They are proprietary download archives, so their contents and internal structure are intended to be handled by the Stardock software that created or downloaded them.
The format is associated with the Stardock Central distribution system rather than with documents or user-created project files. If an SDC file is kept as a backup of a download, preserving the original file is preferable to modifying it.
Open the file through Stardock Central on Microsoft Windows. The program can recognize its own SDC download archives and use the stored data when installing or managing the associated Stardock product.
Do not expect a general archive utility to open the file as a normal document.
SDC files do not have a useful general-purpose conversion route. They are proprietary download archives, not editable documents or media files.
To use the downloaded software, let Stardock Central process the file. If the file is being retained for backup, keep it in its original SDC format rather than converting or renaming it.
Software applications that can open sdc files:
Microsoft Windows
Software apps that create sdc files:
Microsoft Windows
Software apps that backup sdc files:
Microsoft Windows
