Free 3D tools
for architects and designers

View, convert and plot CAD and 3D files in your browser, from IFC and Revit building models and DWG and DXF drawings to STL prints and texture maps.

The viewers and converters run on your own computer: no file is uploaded and no account is needed.

AI rendering from a screenshot of your model

Laptop on an oak desk comparing a white SketchUp model of a villa with the same villa as a photoreal AI render

AI rendering

Turn a screenshot of your SketchUp, Revit or Rhino model into a photoreal render in about 20 seconds.

Make an AI render

Viewers for CAD and BIM files

Laptop on an oak desk showing a CAD floor plan with coloured layers, next to a rolled drawing

DWG viewer

Open AutoCAD DWG and DXF drawings online: every layout, layers on and off, zoom and pan.

Open the DWG viewer
Laptop showing a CAD drawing of a mechanical part outline with coloured layers next to a laser-cut aluminium version of the part

DXF viewer

Open DXF files online: every layout, layers on and off, zoom, then save as PDF or SVG.

Open the DXF viewer
Laptop showing a colour-coded 3D BIM model of a building cut open, with printed plans beside it

IFC viewer

Open IFC files from Revit, ArchiCAD and Tekla. Filter by element and level, check properties and measure.

Open the IFC viewer
Laptop showing a 3D model of a timber-clad apartment building, with a scale ruler beside it

Revit viewer

Open .rvt files without Revit: converted to IFC by Autodesk, then viewed with levels and properties.

Open the Revit viewer
Two laptops on an oak desk, one showing a Revit model and the other the same building as a colour-coded IFC model

Revit to IFC converter

Convert RVT files to IFC 2x3 with levels and properties, using Autodesk's own conversion.

Convert Revit to IFC
Monitor showing a BIM model of an office building with steel in blue and ducts in orange, a white hard hat in front

BIM viewer

Review BIM models from Revit, Archicad and Tekla without a licence: levels, properties, measuring.

Open the BIM viewer
Laptop showing a blue-grey 3D CAD model of a mechanical part next to a 3D printed copy of the part

SolidWorks viewer

Open SolidWorks part files without SolidWorks, then save them as STL, STEP or GLB.

Open the SolidWorks viewer
Machined aluminium bracket next to a laptop showing the same part as a 3D CAD model

STEP viewer

Open STEP and IGES files from SolidWorks, Fusion 360 and Inventor. See every part and measure.

Open the STEP viewer
Desktop 3D printer with a printed grey building model on its build plate

STL viewer

View STL files for 3D printing with size, volume, weight and a watertight check.

Open the STL viewer
Laptop showing a 3D model of a lounge chair beside small printed and wooden 3D models on a desk

3D viewer

Open 18 kinds of 3D file online, from STEP and FBX to GLB and IFC, with parts and measuring.

Open the 3D viewer
Tablet showing a glossy 3D product model of a sneaker in a web viewer next to the real shoe

GLB viewer

Open GLB and glTF files with their materials and textures, size and triangle count.

Open the GLB viewer
Monitor showing a textured 3D model of a ceramic vase next to the real vase on the desk

OBJ viewer

Open OBJ files with their MTL materials and textures, and save as STL, GLB or STEP.

Open the OBJ viewer

CAD drawings: DWG, DXF and PDF

Printed architectural floor plan on a desk next to a laptop showing the same plan

DWG to PDF

Plot AutoCAD drawings to PDF: layouts 1:1 with title blocks, line weights and hatches.

Open DWG to PDF
Printed architectural plan on a desk beside a laptop showing the same plan as coloured CAD lines

PDF to DWG

Turn PDF drawings into CAD lines for AutoCAD: lines, text and layers, at drawing scale.

Open PDF to DWG
Laser-cut plywood panel standing next to a laptop showing the same pattern as vector lines

DXF converter

Open DXF drawings and save them as PDF or SVG, with layouts, line weights and hatches.

Open the DXF converter
Laser-cut birch plywood sign with a curved logo outline beside a laptop showing the same vector paths

SVG to DXF

Convert SVG to DXF for CAD, laser cutting and CNC: exact lines, layers, real size.

Open SVG to DXF
Black and white printed logo on paper next to a laser-cut steel version of the same logo

PNG to DXF

Trace PNG and JPG images into DXF shapes for laser cutting, CNC and CAD.

Open PNG to DXF

3D printing: STL and 3MF

3D printed parts and a small printed building model with a spool of filament

STL converter

Convert 3D files and images to STL for 3D printing, with a watertight check.

Open the STL converter
Desktop 3D printer printing a multi-colour part, with a finished part and a spool of filament beside it

3MF to STL

Convert 3MF files from Bambu Studio and PrusaSlicer to STL, or STL to 3MF.

Open 3MF to STL
Machined aluminium part next to an identical 3D printed plastic copy

STEP to STL

Convert STEP and STP files from SolidWorks, Fusion 360 and Inventor to STL for 3D printing.

Open STEP to STL
White 3D printed lithophane of a mountain landscape lit from behind by window light

Image to STL

Turn PNG and JPG images into STL or OBJ reliefs and lithophanes for 3D printing.

Open image to STL

3D model converters

Laptop showing a wireframe house model, with a 3D printed and a wooden model of the same house

3D converter

Convert between STEP, OBJ, FBX, STL, glTF, PLY, IFC and more, in both directions.

Open the 3D converter
Laptop showing a textured 3D model of a lounge chair, with fabric and wood samples

OBJ converter

Convert STL, FBX, STEP, glTF and 3DS to OBJ with materials, or OBJ to other formats.

Open the OBJ converter
Monitor showing a grey 3D human figure in a T-pose with its bone skeleton

FBX converter

Convert FBX files from 3ds Max, Maya and Blender to OBJ, GLB or STL.

Open the FBX converter

Images and textures

Brick, stone and oak material samples in front of a monitor showing a purple and blue normal map

Normal map generator

Make normal, height, roughness and AO maps from any image, seamless if you need it.

Open the normal map generator
Tablet showing a living room split down the middle, empty on the left and furnished on the right

Before and after slider

Make a before and after slider, video or image from two photos, for listings, Reels and your website.

Open the before and after maker
How the tools work

Free, private and made for real files

The same 3 promises apply to every tool on this page.

Your files stay with you

The tools open and convert files inside your browser tab. Nothing is sent to our server, so confidential projects stay confidential.

Free, with no account

No sign-up, no watermark and no daily limit. We are a 3D studio, and the tools are free because some people who use them later need a model built or rendered.

Built for real project files

STEP assemblies, IFC building models, OBJ with textures and large STL files all open, with the size and triangle count shown before you convert.

Guides

Guides for choosing 3D and CAD software

Independent comparisons, a press kit, free images and free textures, from a studio that uses these files every day.

Floor plan software compared

Free plans, prices, platforms, 3D and DWG import for 13 floor plan programs, checked on each vendor's own pricing page.

Read the comparison

Press kit for the tools

Descriptions, screenshots and facts about every free tool, for writers, teachers and list editors.

Open the press kit

Free architectural renderings

AI concept images of houses, apartments, interiors and furniture, free to use in articles and coursework with a credit link.

Browse the images

Free seamless textures

Wood, stone, concrete, brick, tiles, metal and fabric, each with a 2048 px colour and normal map, free with a credit link.

Browse the textures
What we do

When you need more than a file tool

The tools change file formats. Building the model, fixing it or turning it into images that sell a project is our work. See our exterior rendering and interior rendering services.

Untextured clay model of a terrace of houses with its parking and planting, Finland

3D modeling

Accurate 3D models from CAD drawings, PDFs, sketches and scans.

See 3D modeling
3D exterior rendering of a curved hotel and its forecourt at dusk, Estonia

Architectural visualization

Photoreal images and films of buildings before they are built.

See architectural visualization
3D product rendering of a tambour-front storage cabinet shown in black and white finish options side by side on a plain background

3D product rendering

Product images for catalogues and web shops, from your CAD files.

See product rendering
Free tools FAQ

Questions about the free tools

Who makes them, what they cost and what you may do with the files.

Ask us a question
Who makes these tools?
3Dstudio.co, an architectural visualization studio working since 2013 for architects, developers and designers in 17 countries. We use the same file formats every day in our own projects.
Can I use the converted files in commercial work?
Yes. The files you convert are yours, and the tools add no watermark and no licence of their own. The only limits are the ones on the model you started with.
Which tools are coming next?
The tools here are the ones that work well today. We add a new one when it can do the job properly in a browser, not before. Tell us which file problem you would like solved next.

Need a 3D model or render instead?

Send the drawings, BIM or mesh files you have. We reply with one fixed price and a delivery date within 30 minutes.

Get a fixed quote in 30 minutes See our services