How to convert a 2D floor plan to 3D
A step-by-step guide for the free Floorplan 3D converter. The whole process takes a few minutes and runs entirely in your browser.
Most homes exist on paper long before they exist in 3D: an estate agent's plan, a screenshot from a listing, a developer's PDF brochure, sometimes just a photo of a sketch. The Floorplan 3D converter turns any of those into a real 3D home you can furnish and walk through — by tracing the rooms once, on top of the original plan, instead of measuring and redrawing everything from scratch.
Open the converter Start from a preset plan instead
What you need
- A floor plan as a PNG/JPG image or a PDF — or no file at all: the converter also has a blank canvas and ready-made preset plans.
- One real-world measurement from the plan (a printed dimension line is perfect) to set the scale.
- That's it — no account, no install, nothing to pay.
The five steps
- Upload your floor plan. Drag the file onto the converter page. For a multi-page PDF, use the page picker to choose the page that shows the plan.
- Trace one rectangle per room. Drag a rectangle over each room, following its inner walls, and pick the room type. If you'd rather not trace by hand, the optional AI detection (your own API key) drafts the rectangles for you — you then drag corners to fix them. Tip: for an L-shaped room, cover the main rectangular area; you can split it into two rectangles if both parts matter.
- Set the scale. Click the two ends of a dimension you know, then type the real distance. The converter accepts mm, cm, m, inches and feet. Calibrate against the longest dimension printed on the plan for the best accuracy.
- Adjust doors and windows. The converter generates doors on shared walls and windows on outside walls automatically. Preview them: flip a door's swing side, or remove any door or window that doesn't belong (a removed door is filled back in as wall).
- Convert. One click builds the walls, doors and windows and opens the result in the editor: furnish it from the 70-piece library, try flooring, check areas and costs, flip a door, then view it in 3D or take the first-person walkthrough.
After converting
- Changed your mind about the layout? The editor's File menu has “Edit plan layout…”, which loads your plan back into the converter as rectangles — adjust, reconvert, done.
- Share the result. “Copy share link” in the editor packs the plan and its furniture into a single link; anyone opening it sees exactly your home.
- Units. The converter and the editor both switch between metric (m / mm) and imperial (ft / in) displays — use whichever your plan was drawn in.
Furnishing: move, resize and restyle any piece
- Add furniture. Drag pieces from the 70-item library into the plan, or click one to drop it into the selected room. A newly placed piece stays selected, ready to adjust.
- Resize it to fit. Click any placed piece and the panel on the right lets you type its exact width and depth in millimetres — turn the standard 2,400 mm sofa into the 1,750 mm one you actually own. In the 2D view you can also drag the small orange square at the piece's corner to resize it by eye.
- Height scales too. The panel's Height (%) field stretches or shrinks a piece's 3D height from 30% to 300% — a taller wardrobe, a lower platform bed — while its footprint stays the same.
- Move, rotate, recolor. Drag pieces to move them (in 3D too: click to select, then drag along the floor), drag the round handle above a piece to rotate it, and use the panel to fine-tune position and angle, change its color, duplicate it or delete it.
Common questions
What image works best?
A straight-on, high-contrast plan with visible room outlines and at least one printed dimension works best: estate-agent plans, developer brochures and exported PDFs are ideal. Crooked photos still work if you trace the room rectangles along the inner walls and calibrate the scale carefully.
How accurate is the converted 3D plan?
As accurate as your tracing and scale calibration. The converter builds the 3D geometry from the exact rectangles and scale you give it, so measure one long, known distance (an overall width or a long wall) for calibration rather than a short one — small clicking errors then matter less.
Can I convert a floor plan PDF to 3D?
Yes. The converter opens PDF floor plans directly and lets you choose the page. Vector PDFs from architects or developers render especially sharply, which makes tracing easier.
Is the converter really free?
Yes — converting, editing, furnishing and sharing plans is free, with no sign up and no watermark. The only optional cost is AI room detection: it uses your own AI provider key, so any per-use fee (about half a US cent with GPT-4o) is charged by your provider to you, never by this site. Manual tracing is always free.
Can I change the size of a piece of furniture?
Yes. Click the piece in the editor and type its real width and depth in the panel on the right, or drag the orange corner square in the 2D view. The same panel also scales the piece's height from 30% to 300%, so furniture matches the items you own instead of a fixed catalogue size.
Floorplan 3D is an unofficial hosted version of the open-source floorplan-3d project (MIT License) — see About & license.