An .sdltm file is a Trados Studio translation memory. Other CAT tools can't read it, but
almost all of them import TMX, the standard exchange format for translation memories. This page
converts the .sdltm to TMX 1.4b without Trados Studio, for example when an agency sends its
memory to a translator who uses memoQ, OmegaT, Phrase or Wordfast.
How to convert SDLTM to TMX
- Find the file. File-based memories are single
.sdltmfiles; Studio keeps them in a Translation Memories folder underDocuments\Studio 20xxunless someone chose another place. Memories that live on GroupShare or in Trados Cloud aren't files, so export those to.sdltmor TMX from Trados first. - Upload it. Several memories in one go are fine.
- Leave Inline tags on Keep tags unless you need plain sentences, for instance for a corpus or machine-translation training data.
- Download
Name.tmxand import it into your CAT tool's translation memory. The same units also come as an Excel file and a CSV.
What the TMX keeps
- Source and target language codes exactly as Trados stored them (such as
en-US,de-DE). - For every unit: creation and change dates, the users who created and changed it, the last-used date and user, and the usage count.
- Custom fields, each value as a property named
x-FieldName. The header lists the field types and picklist values the same way Trados writes them in its own TMX exports, so memoQ or another Trados installation can map them back to fields. - Formatting and placeholders as TMX tags (
bpt,ept,ph).
What is lost
A Trados memory never contains the original formatting codes, only markers, so the tags in the TMX are empty markers; CAT tools handle this fine. Context information used for context matches and Trados' internal index data are not exported.
Checking the memory in Excel
The Excel file has one row per unit: ID, source, target, dates, users, usage count and a column
for each custom field. It is handy for spotting junk before you import. Paired tags show up as
<1>…</1>. A sheet that would exceed Excel's row limit continues on the next sheet, while the
TMX and CSV are never split.
The same upload page also converts termbases to TBX and packages.
More about what this tool reads and writes: Trados File Converter (SDLTM, SDLTB, SDLXLIFF, SDLPPX).