Converters
Convert 3D files for your slicer
Each converter runs in your browser and writes millimetres, so models arrive at the right size. Pick the one that matches the file you have; each page says exactly what's kept and what's lost on the way.
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- No sign-up
- Free, no limits
3MF to STL converter
For programs that don't read a 3MF, or don't read Bambu Studio's version of it (Cura 5.10 and older, Tinkercad, many CAD tools). Export one merged STL or one STL per object; colours, plates and print settings stay behind.
3MF to OBJ converter
For Blender, rendering and game engines. Every object keeps its name and position in the OBJ; remember OBJ has no unit, so set the import scale in Blender.
STL to 3MF converter
Combine several STLs, such as the parts of a multi-colour model, into one 3MF that stores millimetres and keeps every part separate and named. In our tests the 3MF was three to four and a half times smaller than the STL.
STEP to STL converter
Turn a CAD file into a printable mesh and choose how smooth curves and holes should be. Pick parts out of an assembly, or download a 3MF that keeps the parts and colours.
OBJ to STL converter
OBJ files have no unit and often lie on their side. Choose the unit the model was made in and which way is up, and the STL comes out the right size and standing upright.
GLB to STL converter
Print models from AI generators, Sketchfab or Blender: metres become millimetres, the model is stood upright, and a watertight check shows holes before you slice.
STL to STEP converter
Turn an STL, OBJ or 3MF mesh into a STEP solid for your CAD program, with flat areas as real faces.