Quick verdict: I ran one real floor plan through 9 free AI floor plan to 3D tools and watched where each one stopped: a clean 3D model, an empty grey shell, or a paywall. Three were worth keeping. The other six are reviewed below. The short answer to can AI turn a floor plan into a 3D model is yes, free and in about a minute; which tool does it best is the part that needed testing.
The Best AI Floor Plan to 3D Tools, Ranked
- MeltFlex: best overall, and the only one that takes the plan all the way to a furnished, shoppable 3D room.
- Planner 5D: best if you like building and editing the layout yourself.
- Coohom: best browser-based option for a high-quality render.
- Plus 6 more, reviewed below: the capable ones, the empty shells, and the paywalls to skip.
All 9 Floor Plan to 3D Tools Compared
Same plan, same day, same judgement call on every one. "Furnished" means the tool put real furniture in the rooms on its own, not that you can drag pieces in yourself. "Free output" means what you can actually see and keep without paying.
| Tool | Free output | Input it accepts | Furnished automatically | Signup needed | Best for |
|---|---|---|---|---|---|
| MeltFlex | Full 3D model + furnished render on free credits | Photo, PDF, screenshot, hand-drawn | Yes, with shoppable products | Yes | A finished, furnished room |
| Planner 5D | 2D + 3D view, most editing free | Photo, PDF, or build from scratch | No, you drag furniture in | Yes | Editing the layout yourself |
| Coohom | Limited free renders | DWG, PDF, image | No, you place furniture | Yes | High-quality browser renders |
| Floor-plan.ai | Free credits on signup, no card | Image | No | Yes, Google sign-in | A fast look at the geometry |
| Dehome.ai | A few styled renders | Image | Partially | Yes | Quick styled output |
| Archybase | Basic 3D convert | Image | No | No | No-signup one-off convert |
| Cedreo | Trial only | Image, PDF | No | Yes | Home builders and pros |
| Edensign | Basic convert | Image | No | Yes | Simple 2D to 3D |
| SketchUp Free | Unlimited, but you model it | Image as a trace reference | No | Yes | Full manual control |
The pattern in that table is the whole point of this test. Six of the nine stop at an empty grey shell, which is fine if all you wanted was to read the geometry. If you wanted to see the room, you have to furnish it somewhere else afterwards.
Want to skip the reading and just convert your plan? Run it through the free MeltFlex floor plan to 3D tool. Upload a photo, PDF, or hand-drawn sketch, get an interactive 3D model in seconds, then furnish it with real, shoppable furniture. Prefer to know what happens under the hood first? Jump to how AI actually reads a floor plan.
1. MeltFlex: Best for a Furnished, Shoppable 3D Room
Most tools on this list stop at an empty 3D shell. MeltFlex is the one that kept going. You upload a 2D plan, whether that is a photo, a PDF, or a quick phone shot of a paper sketch, and it finds the walls, doors, and windows automatically, then builds a 3D model online in seconds. No CAD, no install, no learning curve. Then it does the part the others cannot. It furnishes every room in whatever style you pick, with furniture scaled to the real dimensions it read off your plan.
Key Features
- Automatic 2D to 3D conversion from a photo, screenshot, or PDF floor plan.
- Furnishes each room in a style you choose (modern, contemporary, Scandinavian, warm, and more), not just an empty shell.
- Output styles run from wireframe and a clean 3D model all the way to a fully photorealistic render.
- Every piece of furniture is detected and linked to a real product you can buy, from IKEA, Amazon, Wayfair, and more.
- Runs in the browser and is free to start with design credits.
My Experience
I uploaded the test plan and had the 3D model back in seconds. The wall detection nailed the layout on the first try. The part that sold me was the furnishing. Same plan, four different styles, each one done in under a minute. That is the gap between a flat 3D drawing and actually seeing what your home will look like once someone lives in it.
I tried a warmer scheme next, and it kept the exact same layout while completely changing the mood. And because every piece is detected and linked to a real product, the render doubled as a shopping list with prices. Nothing else I tested did that.
Pros of MeltFlex
- The only tool here that goes from a plan to a furnished, finished room, not just a shell.
- The furniture is real and shoppable, so the 3D model becomes a buying plan.
- Takes photos, screenshots, and PDFs, with no CAD skills needed.
- Fast (under a minute) and free to start.
Cons of MeltFlex
- Built for interior visualization and furnishing, not structural CAD engineering.
- Like every tool here, the free tier has credit limits before you upgrade.
Who Is MeltFlex Best For?
Anyone who wants to see a home actually furnished. Home buyers picturing an empty apartment, renters working out what fits, and agents staging a listing all get something out of it, especially since you can price the furniture in the same view. Convert your own floor plan to 3D with MeltFlex and judge the quality on your real plan.
2. Planner 5D: Best for Building the Layout Yourself
Planner 5D has AI plan recognition that turns an uploaded 2D plan into an editable 3D layout, plus a big catalog you can drag furniture from. It is genuinely capable and well supported.
Key Features
- AI plan recognition that converts a 2D plan or PDF into an editable 3D model.
- Large drag-and-drop furniture and material catalog.
- 2D and 3D editing modes for DIY layout work.
My Experience
The 2D to 3D recognition handled my plan well and dropped me straight into an editable 3D space. The catch is that the furnishing is all manual. You place every item yourself, and the pieces are generic catalog props, not things you can buy. It feels more like a design sandbox than a one-click visualizer.
Pros of Planner 5D
- Solid automatic 2D to 3D conversion.
- Big DIY furniture catalog and full layout control.
Cons of Planner 5D
- Manual furnishing takes time and skill.
- HD renders and many catalog items sit behind the paid plan.
Who Is Planner 5D Best For?
People who enjoy building and tweaking the layout piece by piece and do not need shoppable furniture.
3. Coohom: Best Browser-Based 3D Renderer
Coohom runs entirely in the browser and converts uploaded 2D plans to 3D with automatic wall detection. The render quality is among the strongest here, and there is a large asset library to pull from.
Key Features
- Auto wall detection from an uploaded 2D plan, no download required.
- High-quality rendering engine and large asset library.
- Runs in Chrome or Edge directly.
My Experience
The conversion was clean and the renders looked great, but it took the most effort of my top three. There is a real learning curve, and like Planner 5D the furnishing is a manual design job rather than something automatic. Powerful, just not the fast path.
Pros of Coohom
- No install, high-quality renders, big asset library.
Cons of Coohom
- Learning curve for good results, and free exports are limited.
Who Is Coohom Best For?
People who want control over a polished, high-quality render and do not mind investing time to learn the tool.
Other Floor Plan to 3D Tools Worth Trying
4. Floor-plan.ai: Best for a Fast Plain 3D Shell
A dedicated 2D to 3D converter that takes hand-drawn sketches, CAD drawings, and digital layouts. It does one job and does it fast: turn the plan into a 3D shell. It will not furnish or design the space for you.
Best for: a quick structural 3D view of the layout, nothing more.
5. Dehome.ai: Best for Quick Styled Renders
Upload a floor plan image and Dehome.ai generates 3D floor plan renderings with depth and perspective, with a few free credits to start. It adds some styling, but it does not match furniture to real products.
Best for: a fast, styled 3D preview of a plan before the free credits run out.
6. Archybase: Best Free No-Signup Convert
Archybase offers a straightforward online floor plan to 3D model conversion, free to try with little friction. It gets you a basic 3D representation of a 2D plan, but it stays at the shell stage.
Best for: a no-commitment first look at a plan in 3D.
7. Cedreo: Best for Home Builders and Pros
Cedreo converts a 2D floor plan to 3D automatically and is built for home builders and remodelers who need professional plans and renders for clients. It is powerful, but the genuinely free use is a trial rather than a permanent free tier.
Best for: builders and remodeling businesses presenting to clients.
8. Edensign: Best Simple 2D to 3D Converter
Edensign gives you a clean AI 2D to 3D floor plan converter that does the core job without extras. Like most tools here, it gives you the model rather than a furnished, designed room.
Best for: a quick, no-frills 2D to 3D conversion.
9. SketchUp Free: Best for Full Manual Control
SketchUp Free is the powerful outlier. It is not an automatic converter. You model the space yourself using the 2D plan as a reference. The quality ceiling is high, and so is the time and skill it asks of you.
Best for: hobbyists who want full control and do not mind the learning curve.
How AI Reads a Floor Plan, and Where It Guesses
Every tool above runs roughly the same three steps. Knowing them tells you why one plan converts cleanly and the next one comes out with a wall missing.
1. It Finds the Walls With Computer Vision
The model looks at your plan as an image and picks out walls, doorways, windows, and room boundaries from the line work alone. It then classifies each enclosed space, separating a kitchen from a bedroom and a hallway from a living room, using size, shape, and where the room sits in the layout. This is the step that fails on a blurry photo or a low-contrast scan, because if it cannot see the line, it cannot build the wall.
2. It Extrudes the Geometry
Once the rooms are identified, walls get pulled up to a ceiling height with a sensible thickness, and door and window openings are cut where they appeared on the plan. What you get is structurally accurate in plan view, because those positions came straight off your drawing.
3. It Guesses the Third Dimension
Here is the honest part. A 2D floor plan does not contain ceiling height, door swing direction, window sill height, or floor level changes. None of it is on the page, so the AI assumes standard values. That is why these models are excellent for layout, proportion, and furniture planning, and why you should not hand one to a builder. For anything structural you still want a surveyed CAD file.
A plan at least hands the AI real wall positions to work from. Start from a photograph instead and even that is gone, because a flat image carries no scale at all until something of known size anchors it. We took that apart separately in estimating room square footage from a single photo, including how far off the numbers run at each method.
Convert a 2D floor plan to a 3D model and watch these three steps run on your own plan.
All of this assumes you already have a plan. If you do not, that is a different category of tool entirely, and we tested eleven of them in the best floor plan software comparison, from free drawing editors to the AI generators that draw a labelled plan from a written brief.
3D Render From a Floor Plan vs a 3D Model
These two get used interchangeably and they are not the same thing. A 3D model is geometry: walls, openings and volumes you can orbit, measure and walk through. A 3D render is a single lit photograph of that geometry, with materials, a camera position and a light source. Every tool on this page produces the first. Only some go on to produce the second, and if you came here wanting a picture to put in a listing, that difference is the whole decision.
Here is the same one-bedroom apartment at all three stages, so the distinction is visible rather than theoretical.
Why the jump from model to render is the hard part
A floor plan contains almost none of the information a render needs. It tells you a wall is 3.5 metres long. It does not tell you whether that wall is plaster or exposed brick, whether the floor is oak or tile, how high the ceiling is, which way the building faces, or where the camera should stand. When a tool generates a render straight from a plan, it is inventing every one of those, and it is inventing them from statistical priors about what apartments usually look like.
That is worth saying plainly, because it decides what the output is good for. A render generated from a plan alone is a marketing image, not a specification. It is genuinely useful for selling a unit off-plan, for a listing that has no photographs yet, or for showing a client a direction. It is not evidence of what the finished room will look like, and you should never hand it to a contractor as if it were. The same limitation we cover in why AI renders look fake applies twice as hard here, because the model is working from even less information than usual.
How to generate a 3D render from a floor plan
The workflow is the same whichever tool you use, and the steps you control are the ones that matter:
- Convert the plan to a model first. Any of the tools ranked above will do this. Check the walls closed correctly before you go further, because a render of a broken model just hides the break.
- Set the camera before the style. Stand it in a corner at roughly eye height, looking down the longest sightline. Most disappointing plan renders are a camera problem, not a materials problem.
- Name the materials explicitly. Oak herringbone, warm white plaster, matte black frames. If you leave it to a style preset you get the tool's house look, not yours.
- Name the light. Give it a direction and a time of day. Late afternoon sun from the left produces the long shadows that make an image read as a photograph rather than a diagram.
- Check it against the plan. Count the windows and doors in the render and compare them to the plan. Invented openings are the most common failure, and the easiest to miss once the image looks pretty.
There is also a crop of single-purpose sites that do nothing but plan to render, and they dominate the search results for that exact phrase. I have not put my plan through them, so I am not going to rank them here alongside tools I did test. What I can say is that the job they do is the second half of the workflow above, and every tool in the ranked list already gets you through the first half. If you want to try the whole thing on your own plan, convert a floor plan to a furnished 3D room and take the result from geometry to a lit image in one pass.
How to Get the Best Floor Plan to 3D Result
Whichever tool you land on, the quality of your 3D model comes down a lot to the plan you feed it. Here is what I picked up across all nine. If you want to understand the process itself, see the breakdown of how AI floor plan to 3D conversion actually works further down.
Start With a Clean, High-Contrast Plan
Dark lines on a white background read best. Blurry photos, heavy shadows, and faint pencil lines all hurt wall detection. A 2 to 5 MB JPG, PNG, or PDF is the sweet spot, and a clear phone photo of a paper sketch is perfectly fine.
Shoot It Straight On
Angled photos distort the walls and confuse the AI. Get directly above the page and keep the whole plan in the frame. If the walls are cropped at the edges, the tool cannot close the rooms.
Know the Free-Tier Limits Before You Commit
A free floor plan to 3D tool almost always means a free tier. That can show up as capped conversions, watermarks, or the shell for free with furnishing and high-res exports behind a paywall. Run your real plan through the free tier first, and judge the quality before you pay a cent.
Do Not Stop at the Empty Shell
A 3D shell tells you how big a space is and how it flows. It does not tell you what it will look like furnished, or what that will cost. If that is what you actually care about, use a tool like MeltFlex that furnishes the rooms and links the furniture to real products. You can also start from a room photo instead of a plan.
Watch: turning a 2D floor plan into 3D
Prefer to see it happen? This short clip takes a flat 2D floor plan and turns it into a furnished 3D view with MeltFlex, from upload to result.
A 2D floor plan converted into a furnished 3D render in MeltFlex.
How to Convert a Floor Plan to 3D, Step by Step
The exact flow varies by tool, but with an AI converter like the free MeltFlex floor plan to 3D tool it is five steps. And you are not limited to clean professional drawings:architect plans, builder brochures, real estate listing images, a phone photo, and even a hand-drawn sketch all work.
1. Upload your floor plan. Drop in a JPG, PNG, or PDF. The AI reads the image and works out where the walls, doors, and windows are and how the rooms connect.
2. The AI builds the 3D model. In seconds the walls are extruded to realistic heights, openings are cut in the right spots, and each room is separated. You can rotate, zoom, and navigate it freely.
3. Customize materials per room. Set the flooring for each room individually:hardwood in the living room, tile in the kitchen, carpet in the bedrooms:and swap wall colors, door styles, and window frames in real time. The top-down view makes it easy to see how it all fits together.
4. Place real, shoppable furniture. This is where conversion gets genuinely useful. Furnish each room from a catalog of real products with real dimensions and prices, so the model doubles as a shopping list rather than a generic prop scene. If arranging it well is the part you dread, the AI furniture placement tool suggests layouts for each room automatically.
5. Generate photorealistic renders. Turn the furnished model into images that look like professional interior photography, and try the same room in several styles to see which one you actually want to live in. Run your own plan through it free and judge the quality on your real layout.
Convert House Plans and PDF Floor Plans to 3D
Two inputs trip people up: a full house plan and a PDF. Both convert online for free the same way a single-room sketch does, with one habit each that keeps the result clean. Here is what to expect from every input type before you upload.
| What you have | Converts? | Do this first | Accuracy you get |
|---|---|---|---|
| Architect drawing (scaled) | Yes | Nothing, upload as is | Highest, real wall positions |
| PDF floor plan | Yes | Export the page as JPG or PNG at full resolution | Same as the source drawing |
| House plan (whole home) | Yes | Crop to one floor if several are on the sheet | High, one connected model per level |
| Real estate listing plan | Yes | Grab the largest version available | Good for layout, not for build |
| Hand-drawn sketch | Yes | Shoot straight on in even light, darken the walls | Layout and proportion only |
| Phone photo of a paper plan | Yes | Avoid shadow and keystone, fill the frame | Good if the lines are crisp |
| CAD file (DWG, DXF) | Not directly | Export a plan view as an image first | Highest once exported |
House plans (whole-house blueprints). A house plan is just a floor plan for the entire home, often several rooms and sometimes several floors on one sheet. Upload the plan image and the AI maps every room, hallway, and doorway into one connected 3D model. For a multi-storey plan, convert one level at a time so each floor gets its own clean model, then design them independently. It is the fastest way to preview a new build from a developer brochure or lay out an open floor plan across the ground level.
PDF floor plans. Most architect and listing plans arrive as a PDF. Export the page as a JPG or PNG, or screenshot it, and upload that image. Export at full resolution so the AI can see thin interior walls, and if the PDF stacks several floors on one page, convert them one at a time. A scaled architect PDF gives the most accurate model, but a plain listing PDF is fine for visualizing the layout. Once the shell is built, you can place real furniture at exact scale in every room before you commit.
Designing a Second Floor or a Multi-Storey Plan
This is the question I get asked most and the one almost no tool answers on its page, so here it is plainly. None of the nine converts a multi-storey house into a single stacked 3D building in one upload. What they all do is convert one level at a time, and that is genuinely the better workflow anyway.
Crop your sheet so only the second floor is in the frame, upload that, and you get a clean model of just that level. Repeat for the ground floor. You now have two models you can style independently, which matters because upstairs and downstairs rarely get the same treatment: bedrooms and a bathroom up top, living and kitchen below.
Two things to watch. Keep the same crop width on both levels so the floors read at a consistent scale when you put the renders side by side. And remember the stairwell, which appears as an opening on both sheets and is the one element the AI cannot connect between two separate models. If your plan stacks both floors on one page, do not upload the whole sheet: the AI reads it as one enormous flat level and the layout comes out nonsense.
Upload your second floor plan and convert it to a 3D model, then do the ground floor and compare them.
Frequently Asked Questions
How do I turn a 2D floor plan into a 3D model online for free?
Upload an image or PDF of the plan to an AI converter, let it detect the walls and openings, and generate the 3D model right in your browser, with nothing to install. Most tools do this on a free tier. With MeltFlex you can also furnish the rooms with real furniture in the same flow.
What is the difference between a 3D render from a floor plan and a 3D model?
A 3D model is geometry: walls, openings and volumes you can orbit, measure and walk through. A 3D render is a single lit photograph of that geometry, with materials, a camera position and a light source applied. Every tool in this comparison produces the model. Only some go on to produce the render. If what you actually want is an image for a listing or a client presentation, that difference decides which tool you need.
How do I generate a 3D render from a floor plan?
Convert the plan to a 3D model first and check the walls closed correctly. Then set the camera in a corner at roughly eye height looking down the longest sightline, name the materials explicitly rather than picking a style preset, and give the light a direction and a time of day. Finally, count the windows and doors in the render against the plan, because invented openings are the most common failure and the easiest to miss once the image looks good.
Is a render generated from a floor plan accurate?
It is accurate about the layout and invented about everything else. A floor plan tells the tool that a wall is 3.5 metres long. It does not say whether that wall is plaster or brick, how high the ceiling is, which way the building faces, or what the floor is made of, so the model infers all of it from what apartments usually look like. That makes a plan render a good marketing image for selling off-plan or for a listing with no photographs yet, and a bad thing to hand a contractor as a specification.
Can I convert a hand-drawn floor plan to 3D?
Yes. Photograph the sketch with clean lines and even lighting, and the AI will detect the walls and build the 3D model. Hand-drawn input is widely supported, and accuracy just comes down to how clear your lines are.
What is the best free AI tool to convert a floor plan to 3D in 2026?
For a plain 3D shell, Floor-plan.ai, Archybase, and Edensign are all fast and free to try. For a furnished, shoppable room rather than an empty model, MeltFlex is the only one in this test that takes the plan all the way to a finished, priced room, and you can try it free on your own plan first.
Is an AI 3D model accurate enough for renovation planning?
For layout, proportions, and design decisions, yes, because the AI reads the real wall positions off your plan. For structural or construction work you still need a surveyed CAD file. AI conversion is for visualization and planning, not engineering.
Can AI add furniture to my 3D floor plan automatically?
Yes. Once the 3D model is built, MeltFlex furnishes each room with correctly scaled furniture and realistic lighting in a style you choose, then links every piece to a product you can buy. You go from an empty plan to a furnished, shoppable room in one flow.
Can I convert house plans to 3D online for free?
Yes. A house plan is a floor plan for the whole home, and it converts online for free just like a single room. Upload the plan image and the AI maps every room and doorway into one connected 3D model. For a multi-storey plan, convert one floor at a time so each level gets its own clean model.
Can I convert a PDF floor plan to 3D?
Yes. Export the PDF page as a JPG or PNG, or screenshot it, and upload that image. The AI reads the walls, doors, and windows from the page and builds the 3D model in seconds. Export at full resolution, and convert one floor at a time if the PDF shows several floors on a single page.
Can I upload a floor plan and design a second floor?
Yes, but convert one level at a time. No AI tool turns a multi-storey house into a single stacked 3D building from one upload. Crop your sheet so only the second floor is in frame, upload that, and you get a clean model of that level, then repeat for the ground floor. Keep the same crop width on both so the two renders read at a consistent scale. Never upload a sheet with both floors on it, because the AI reads it as one oversized flat level.
Which free floor plan to 3D tool furnishes the rooms automatically?
Of the nine tested, MeltFlex is the one that furnishes rooms on its own, with real products you can buy. Dehome.ai does it partially. The other seven, including Planner 5D, Coohom, and SketchUp Free, give you an empty 3D shell and expect you to drag furniture in yourself. That is the single biggest difference between these tools once the geometry is built.
Turn Your Floor Plan Into a Furnished 3D Room
If all you need is an empty 3D shell, plenty of free tools will do the job. But if you want to actually see your home furnished, and price the furniture in the same view, that is where MeltFlex fills the gap. Upload your 2D plan, get the 3D model online in seconds, and furnish it with real furniture you can buy. Convert your floor plan to 3D now and judge the quality on your own plan.
