2D to 3D floor plan: turn your plan into a linked 3D house model

To turn a 2D floor plan into 3D in ArchHomeAI, draw or import the plan in the 2D editor and click Create linked 3D (or 3D in the flow bar). The site builds walls with real openings, doors, windows, floors, stairs and furniture from the plan in a few seconds, for free, and keeps the model linked: plan changes come in with Update from 2D to 3D, 3D moves go back with Update from 3D to 2D.

1. Draw or import the plan — Walls, doors, windows, rooms and furniture at real size in the 2D editor. Free.
2. Create the linked 3D — One click builds the 3D model and keeps it linked to the plan. Free.
3. Show it — Walk through, export, or send a view to AI Studio for a rendering (uses credits).

What a 2D to 3D conversion actually does

A floor plan is a horizontal cut through a building, seen from above: it shows where walls, doors and windows are and how big each room is, but not how high anything is. A 3D model adds that missing dimension. Walls get their height and thickness, openings become real holes with a lintel above and a sill below, floors get their finishes and furniture gets its volume. That is why most people — clients, families, even builders — understand a design much faster in 3D: you can see whether the island blocks the kitchen, how a corridor feels, or where the light comes in.

In ArchHomeAI the conversion is done by the site's own geometry code, not by AI. The plan is drawn in millimetres and the 3D editor works in centimetres; the converter translates every element and its position exactly, so the model has the dimensions you drew.

Three ways to start

Upload Blueprint or Photo in the 3D dashboard reads walls, rooms, doors and windows from the drawing itself (JPG, PNG, WebP or PDF up to 10 MB) and builds a 3D model directly, without AI and without credits. If you also want room names, furniture and fixtures, the optional AI Analysis reads the drawing with AI; it uses credits. Either way, check the overall width it reports and correct it if needed — a blurry photo stays a blurry photo. Need a clean, measured plan first? See how to draw a floor plan with dimensions or converting a plan image to CAD.

Step by step: from 2D floor plan to a linked 3D model

1. Finish the walls first In the 2D editor draw (or trace) the walls, then the doors and windows, then the rooms. Keep Snap on so wall ends meet — clean corners give clean 3D corners.
2. Set the floor finishes and furniture Use Add element for furniture, kitchen and bathroom items, and the Floors group for parquet, tiles or marble. Everything you place in 2D appears in 3D.
3. Create the linked 3D Click Create linked 3D, or 3D in the flow bar at the top. The scene is built from the current floor (level) in a few seconds. It is free.
4. Look around Drag to orbit, scroll to zoom and right-drag to pan, or pick Perspective, Top, Front and the other views under the model.
5. Make it realistic Turn on Realistic look to draw sofas, beds, tables and plants as real models. Select a wall or floor and open Materials for plaster, brick, stone, wood or tiles; Lighting adjusts the light.
6. Edit in 3D Select an object and drag it, or use the arrow keys (10 cm per press, Shift for 1 cm). Walls have handles for length, height and curve, and Properties takes exact values.
7. Keep both sides in sync Changed the plan? Click Update from 2D to 3D in 3D. Moved furniture or a wall in 3D? Update from 3D to 2D lists each change and writes it into the plan only after you approve.
8. Walk, export, render Click Walk to explore at eye height, Export for GLB, OBJ or a 360° image, or To studio to send the current view to AI Studio.

1. 2D plan · Update from 2D to 3D · Update from 3D to 2D — Open the source plan, pull plan changes into 3D, or send 3D moves back to the plan.
2. To studio — Sends the current view to AI Studio as the source image. Sending is free; generating uses credits.
3. Export — glTF (.glb), OBJ (+MTL), 360° image and the 360° gallery.
4. Panels — Layers, Materials, Lighting, Add element, QA, AI and Realistic look.
5. Objects in scene — Every wall, door, window and piece of furniture. Click one to select it.
6. Walk — First-person walk-through at eye height.
7. Camera views — Perspective, Top, Front, Rear, Left, Right and a 2D / 3D switch.

Side by side: edit the plan and watch the 3D update

The fastest way to design in 3D is often not to leave the plan at all. In the 2D editor, Side by side: 2D + 3D splits the screen: draw walls, move a door or swap a sofa on the left and the 3D on the right follows a moment later. You can also select and drag furniture in the 3D pane — the edit goes straight into the 2D plan, and one drag is one undo step. The split view needs a wider screen; on a phone, use the 3D preview instead.

1. Flow bar — Projects › 2D › 3D › Studio AI — the steps of one project.
2. 3D up to date — The link status. When the plan has changed it reads “3D is out of date — update”.
3. Side by side: 2D + 3D — Opens or closes the 3D pane next to the plan.
4. 3D pane tools — Select and move, rotate, resize, and close the 3D view.
5. Walk — Walk through the model right inside the split view.
6. The plan — Every wall, door and item you draw here appears in the 3D.

How the 2D ⇄ 3D link works

Furnish the model from the 3D library

Open Add element in the 3D editor. The Realistic tab holds real 3D models — sofas, armchairs, tables, beds, storage, lamps, wall decor, plants and outdoor items — from Poly Haven, released as CC0. The other tabs cover architecture, indoor and outdoor items, including kitchens, bathrooms, pools and garden furniture. Click a card to add it, or drag it straight into the 3D view; the size on each card is in centimetres.

• Sofas, tables and beds stretch the smart way: arms, legs and frames keep their shape and only the middle grows.
• Fabric models can be tinted to any colour while the weave and texture stay; Original removes the tint.
• Height above floor (cm) in Properties lifts a wall cabinet, a mirror or a pendant; PageUp and PageDown do the same from the keyboard.
• Search finds items in your language, so you can type the name you know.
• The library is still growing: some items — many kitchen and bathroom fixtures, for example — are drawn as clean procedural models rather than scanned ones.

Walk through the house

Click Walk on the 3D view. The camera drops to eye height (160 cm): move with W, A, S, D or the arrow keys, drag to look around, hold Shift to go faster and press Esc or Exit walk to return to the orbit view exactly where you left it. On a phone or tablet an on-screen joystick appears. For a guided video-style tour of the model, see the virtual house tour guide.

Export and share the 3D model

GLB is the binary form of glTF, an open, royalty-free 3D format from the Khronos Group often called “the JPEG of 3D” (glTF). The exported files contain only the model — no grid, lights or selection markers.

Tips for a clean 3D model

• Close every corner in 2D: walls that meet in the plan meet in 3D. The 3D joins small gaps automatically, but a wall drawn far past a corner stays that way.
• Draw doors and windows on a wall, not next to it — only then are they cut into the wall.
• Make heavy layout changes in 2D and fine-tune furniture in 3D; then use Update from 3D to 2D so the plan, the sheet and the schedules stay correct.
• Click Save (or Ctrl+S) after a big change — the chip next to it shows when the scene was last saved.
• Use the 3D to check, not to build: the plan and its dimensions are the reference, and AI renders are visualisations, not construction drawings.

Turn your plan into 3D now Open the 2D editor, draw or import your plan and click Create linked 3D. It's free. Open the 2D dashboard