3D-Calc spreadsheet
Unknownother
file format
Identify it
| Extensions | .3dd |
|---|---|
| MIME types | application/octet-stream |
| Signatures | 18b5 at byte 0 |
| Wikidata | Q105857448 |
Not sure your file is this? Identify it from its first bytes, in your browser.
Open it
No software is recorded for this format.
Convert it
No conversion recorded. One of the tools above may export it; search for a chain.
Sources
From Wikidata. Updated 2026-10-20.