SDL Trados Studio translation memory
File type: Various data file
An sdltm file is a file-based translation memory used by SDL Trados Studio.
It stores source and target-language translation units that the software can reuse during translation projects.
File type category:
Various data file
Date updated: October 16, 2026
The sdltm file extension is associated with SDL Trados Studio, a computer-assisted translation environment for language professionals. The software was developed by SDL and is now part of RWS.
An sdltm file contains a translation memory, including bilingual translation units and related information used to find and reuse previous translations. It is a working data file rather than a document intended for direct reading.
SDL Trados Studio uses these files as file-based translation memories alongside translation projects and other language resources. The format remains used by the Windows version of SDL Trados Studio.
Open an sdltm file in SDL Trados Studio on Microsoft Windows. Use the software's translation-memory management tools to open or add the file to a project.
The file is intended for use by SDL Trados Studio and will not normally be readable in a text editor.
SDL Trados Studio can export the translation units from an sdltm file to the TMX exchange format. The resulting TMX file can then be imported into compatible translation-memory software.
This exports the translation memory's contents rather than converting the original file into a general-purpose document format.
Software applications that handle other tasks involving sdltm files:
Microsoft Windows
Language
