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View and convert STL, STEP, 3MF, OBJ, GLB, FBX and PLY files, turn images into printable models, and calculate print costs. Nothing is uploaded.
No uploadNo sign-upWorks on phone & desktop11 input formats
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Try Pro freePopular converters
STL to STEP converterMesh to CAD solidSTEP to STL converterCAD to printable mesh3MF to STL converterSlicer project to STLSTL to OBJ converterFor Blender & MayaOBJ to STL converterReady for slicingGLB to STL converterWeb model to printFBX to OBJ converterGame asset to OBJGLB to OBJ converterglTF to OBJSTL to 3MF converterSmaller, with unitsPLY to STL converterScan to STLOBJ to GLB converterFor web & ARGLB to USDZ converterAR on iPhone
Viewers
STL viewer.stlSTEP viewer.step .stpGLB viewer.glbGlTF viewer.gltfOBJ viewer.objFBX viewer.fbx3MF viewer.3mfPLY viewer.plyUSDZ viewer.usdzDAE viewer.daeIGES viewer.iges .igsG-code viewer.gcode toolpaths
Create printable models
Image to STL converterPhoto or logo to reliefLithophane makerBack-lit photo printsSVG to STL converterExtrude vectorsText to STL generator3D letters & signs
Calculators
Resin calculatorml of resin & cost3D print cost calculatorFilament, power, timeSTL volume calculatorVolume & weight
Guides
How to Find and Fix Non-Manifold STL FilesMost failed or strange-looking slices trace back to a mesh that is not a clean, closed solid, and most of those meshes can be fixed in minutes once you know what to look for.How to Make and Print a Great LithophaneA lithophane lives or dies on three things: the photo you feed it, the thickness range you choose, and how carefully the plastic is laid down.Estimating Resin Usage and Cost for Dental PrintsThe resin in the model itself is only part of what a print consumes; supports, rinse losses and failed prints decide what a dental part really costs.Converting STL meshes to STEP for CAD workTurning a mesh into STEP gets it into your CAD program as a solid, but it stays made of flat triangles, so the useful question is what you can do with it once it is there.Why your STL is tiny or huge in the slicer, and how to fix itWhen a model shows up as a speck or fills the whole build plate, the geometry is fine and the unit assumption is wrong, and the dimensions tell you which factor to apply.STL vs 3MF: what actually differs and which one to useSTL is the format every printer workflow understands, 3MF is the one that carries everything else, and knowing exactly what each stores tells you which to send.