Making a floor plan online has one hard part and a lot of easy parts. The hard part is getting the scale right, once. Do that and the rest is tracing and dropping furniture, which anyone can do. Skip it and every measurement is a guess. This walkthrough puts the scale step where it belongs, near the start, so the plan you end up with is real.
What you need
| Item | Why | Detail |
|---|---|---|
| A photo or PDF, or measurements | The starting shape | A phone photo of an existing plan is enough |
| One known length | To set the scale | A wall, a door width, anything you can measure |
| About 10 minutes | Start to 3D | Longer only if the room is complex |
| A browser | Where it runs | Nothing to install |
The steps
- 01Measure or photograph the room. If you have an existing floor plan on paper, a straight-on phone photo works. If not, measure the walls with a tape and note the longest one, you will use it to set the scale.
- 02Upload the photo or PDF into the editor, or start from a blank canvas if you are working from measurements alone.
- 03Set the scale from one known length. Draw a line along a wall you measured and type its real length. This one action makes everything on the canvas real. Get it right before you draw anything else.
- 04Trace or auto-trace the walls. Follow the inside face of each wall. Auto-trace can pick up the outline from a clean plan photo; touch up any wall it misses by hand.
- 05Add doors and windows where they actually sit. Mark each door's swing so you can see the space it needs. This is easy to forget and annoying to fix later.
- 06Drop in furniture at true size from the catalog. Because the plan is scaled, a piece that overhangs a doorway on screen will overhang it in the room.
- 07Switch to 3D and walk it. Standing inside at eye level reveals tight passages and blocked sightlines that a top-down view flattens away.
Accuracy tips
A floor plan is only useful if you can trust the numbers on it. Three habits keep it honest.
- Set the scale from the longest wall. Measurement error is a percentage; spread over 4 m it barely shows, over 50 cm it can throw the whole room off.
- Trace the inside of the walls, not the outside. The inside face is the floor you furnish and walk on.
- Sanity-check with a known object once you are in 3D. A standard interior door is about 80 cm wide and a kitchen counter about 90 cm deep. If either looks off, your scale needs a correction, not the furniture.
Once the shell is right, planning the room itself is the fun part. If you are working with a small or awkward space, studio apartment layout ideas and furniture clearance and walkway spacing give you the clearances to aim for.
Not sure a browser tool is the right choice for your project? The honest comparison of planning approaches says plainly when to reach for CAD instead.