# STL files saved in inches, can luban covert them? **URL:** \ **Category:** Snapmaker 2.0 (3-in-1)\ **Created:** [July 29, 2021, 1:43am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151 "2021-07-29T01:43:59Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![damhard](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/damhard/32/4903_2.png) [@damhard](https://forum.snapmaker.com/u/damhard)\ **Post date:** [July 29, 2021, 1:43am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/1 "2021-07-29T01:43:59Z")
hello, I came across a STL file on thingiverse that is save in inches. Is there a way to get LUBAN s/w to covert to metric? ---
**Author:** ![Artezio](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/artezio/32/15834_2.png) [@Artezio](https://forum.snapmaker.com/u/Artezio)\ **Post date:** [July 29, 2021, 2:55am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/2 "2021-07-29T02:55:07Z")
Did you try it? Better to try first since I honestly don’t think there’s many American English measurement files out there. I know Cura recognizes both and can convert it to metric if needed. But Luban is rather limited, do you have the link to let me test it? Update: I see no way in Luban to do it. ---
**Author:** ![damhard](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/damhard/32/4903_2.png) [@damhard](https://forum.snapmaker.com/u/damhard)\ **Post date:** [August 1, 2021, 7:28am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/3 "2021-08-01T07:28:31Z")
thanks…i saw a post where it was suggested to increase the scale by 2540% which seems to work 🙂 ---
**Author:** ![Artezio](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/artezio/32/15834_2.png) [@Artezio](https://forum.snapmaker.com/u/Artezio)\ **Post date:** [August 1, 2021, 7:48am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/4 "2021-08-01T07:48:47Z")
@damhard holy crap that’s a huge scale lmao. Personally, to avoid the headache, I just go into blender and change the measurements to metric and re-export. ---
**Author:** ![MooseJuice](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/moosejuice/32/10684_2.png) [@MooseJuice](https://forum.snapmaker.com/u/MooseJuice)\ **Post date:** [August 1, 2021, 11:47am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/5 "2021-08-01T11:47:03Z")
Pretty sure if you scale the part 2540.00% it will be freedom units to metric simplify 3d does that for you if it think the part is too small it will say hey is this not metric u should try this out if it doesnt seem right ---
**Author:** ![damhard](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/damhard/32/4903_2.png) [@damhard](https://forum.snapmaker.com/u/damhard)\ **Post date:** [August 1, 2021, 12:22pm UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/6 "2021-08-01T12:22:26Z")
Thanks…I have almost finished printing the parts and they look ok. When they are 1st opened in luban they look minuscule, after applying that scale they look about right ---
**Author:** ![ElloryJaye](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/elloryjaye/32/13979_2.png) [@ElloryJaye](https://forum.snapmaker.com/u/ElloryJaye)\ **Post date:** [August 2, 2021, 1:01am UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/7 "2021-08-02T01:01:52Z")
Yes, that’s the correct conversion factor (1 inch = 24.5 mm). ---
**Author:** ![RickHy](https://avatars.discourse-cdn.com/v4/letter/r/bcef8e/32.png) [@RickHy](https://forum.snapmaker.com/u/RickHy)\ **Post date:** [August 7, 2021, 7:21pm UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/8 "2021-08-07T19:21:22Z")
Actually the proper conversion factor of inch to millimeters is 25.4. In Luban the scale factor to use is 2540. ---
**Author:** ![cadprobs](https://avatars.discourse-cdn.com/v4/letter/c/9fc348/32.png) [@cadprobs](https://forum.snapmaker.com/u/cadprobs)\ **Post date:** [October 26, 2026, 5:11pm UTC](https://forum.snapmaker.com/t/stl-files-saved-in-inches-can-luban-covert-them/20151/9 "2026-10-26T17:11:32Z")
Classic inches to mm trap: STL has no reliable unit metadata, so Luban and slicers guess. Before scaling 2540%, open the STL and measure a designed edge (a 1 inch cube should read about 25.4 mm if the slicer assumed mm). Disclosure: I’m Ethan Tan, CADProps developer. Free STL viewer: [STL Viewer Online: Mesh Dimensions, Area & Volume | CADProps](https://www.cadprops.com/tools/stl-viewer/) (92 extensions; natives on CADProps servers).