How to make floor plans: A beginner's guide to creating detailed floor plans

Creating a floor plan used to mean graph paper, a ruler, and a lot of erasing. Today you can do the whole thing online in under an hour — no design experience required. Coohom's free floor plan creator gives you a drag-and-drop canvas, an 8-million-item 3D model library, and one-click photorealistic rendering, all without downloading any software. Whether you're planning a new build, mapping out a renovation, or simply reimagining your living room, this guide walks you through every step of how to create a floor plan in Coohom.

Step 1: Measure Your Space Before You Start

Accurate measurements are the foundation of any usable floor plan. Before opening Coohom free floor plan creator, grab a tape measure and record the following for every room:

1. Overall length and width of each room (measure wall to wall at floor level).
2. Door positions and swing widths — note which side the door is hinged on.
3. Window centerlines and sill heights — relevant when placing tall furniture.
4. Fixed features: fireplaces, built-in shelving, support columns, radiators.
5. Ceiling height — important once you move into 3D view.

Sketch a rough bubble diagram on paper first. It doesn't need to be to scale — just enough to capture the relationships between rooms and where the openings fall. You'll translate it into Coohom in the next step.

Pro tip: Measure twice in both directions (length and width) and use the larger of the two readings. Rooms are rarely perfectly rectangular, and giving yourself a small buffer prevents furniture from clipping walls later.

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Step 2: Sign Up and Open the Floor Plan Editor

Go to coohom.com and create a free account — no credit card required. Once you're logged in:

1. Click New Project from your dashboard.
2. Select Floor Plan as the project type.
3. Choose a blank canvas or pick from Coohom's pre-built templates (studio, 1BR, 2BR, open-plan, etc.) to use as a starting point.
4. Set your unit preference — imperial (ft/in) or metric (m/cm) — in the toolbar before drawing a single wall. Changing units later rescales everything.

You'll land in the 2D editor, which looks like a top-down blueprint view. This is where all structural drawing happens. The 3D view is always one click away via the 3D Preview button in the top right.

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Step 3: Draw Your Walls

Coohom uses a click-to-draw wall tool. Select Draw Walls from the left panel, click to place your first point, then click each corner of the room in sequence. Double-click (or press Escape) to close the shape.

1. Type exact dimensions into the length input that appears as you draw — this is faster and more accurate than eyeballing.
2. Default wall thickness is 200 mm (≈ 8 in) for exterior walls. Interior partition walls are typically 100 mm (≈ 4 in). Adjust per wall in the properties panel on the right.
3. Hold Shift to snap to 45° or 90° angles — critical for keeping walls orthogonal.
4. Use the Room tool to auto-detect enclosed spaces and apply room labels (kitchen, bedroom, bath) with a single click.

Once the outer perimeter is drawn, add interior walls the same way. Coohom will automatically detect where walls meet and snap them together, keeping your floor plan structurally clean.

Step 4: Add Doors, Windows, and Openings

With your walls in place, open the Building Elements panel (door and window icon on the left sidebar). Drag any element directly onto a wall — Coohom snaps it to the center of the nearest wall segment.

1. Doors: single, double, sliding, pocket, bi-fold — select the type then drag to position. A blue arc shows the swing radius so you can verify clearance.
2. Windows: set sill height and width in the properties panel. Standard residential windows start at 36 in (900 mm) sill height.
3. Openings: use the open archway element for pass-throughs that have no door at all (e.g., kitchen-to-dining connections).

Check clearances as you go: a door needs at least 32 in (810 mm) of clear opening width for accessibility, and the swing should never block a light switch or appliance handle.

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Step 5: Furnish Your Layout

This is where Coohom pulls ahead of basic floor plan tools. Click Furniture in the left panel to open the model library. You can search by keyword ("sectional sofa," "queen bed frame," "kitchen island") or browse by category and brand.

Every model is true-to-scale, so if you drop in a 96-inch sofa, it occupies exactly 96 inches on your floor plan. Key furniture placement rules to keep in mind:

1. Traffic lanes: maintain at least 36 in (900 mm) of clear walkway between large pieces.
2. Conversation zones: seating should be within 8 ft (2.4 m) of each other for comfortable talking distance.
3. Bedroom clearance: leave 24–36 in (600–900 mm) on the walking side of a bed; the non-walking side can go as close as 15 in (380 mm) to the wall.
4. Kitchen work triangle: keep the total path between sink, stove, and refrigerator under 26 ft (8 m).

Use the rotate handle (the curved arrow that appears when a model is selected) or type a precise rotation angle in the properties panel. To duplicate a piece, select it and press Ctrl + D (Cmd + D on Mac).

Step 6: Switch to 3D and Refine

Click 3D Preview to see your floor plan as a fully furnished room. Orbit the camera with click-and-drag, zoom with the scroll wheel, and pan with the middle mouse button. From here you can:

1. Swap finishes — wall paint colors, flooring materials, countertop surfaces — directly in the 3D view without going back to 2D.
2. Adjust natural lighting by setting the time of day and compass orientation.
3. Move furniture by clicking it and dragging — changes sync back to your 2D plan automatically.

The 3D view catches proportion issues that 2D often hides: a dining table that looked fine on paper may look cramped between a wall and a kitchen island once you see it at eye level.

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Step 7: Render, Export, and Share

When your layout is final, click Render to generate a photorealistic image. Coohom's cloud renderer typically completes in 1–3 minutes depending on scene complexity. Once done, you can:

1. Download the 2D floor plan as a PNG or PDF — annotated with room dimensions, ideal for sharing with contractors or landlords.
2. Download the 3D render as a high-resolution JPG.
3. Share a live 3D link that anyone can view in a browser without signing up — useful for client presentations or getting feedback from family members.
4. Export a materials list showing every model in the scene, its dimensions, and (for brand models) a direct purchase link.

Frequently Asked Questions

Do I need design experience to use Coohom?

No. Coohom is built for homeowners and first-time designers. The drag-and-drop interface and automatic snapping handle most of the technical precision for you. Most users produce a complete furnished floor plan within their first session.

Is it really free?

Yes — the core floor planning and 3D preview features are free with a standard account. Some advanced rendering resolutions and premium model brands require a paid plan. You can see exactly what's included on Coohom's pricing page.

Can I import a blueprint or sketch?

Yes. Coohom supports importing a JPG or PNG image as a background reference layer. Scale it to match real-world dimensions, then trace your walls over the top. This is the fastest way to digitize an existing paper plan.

How accurate does the floor plan need to be for a contractor?

For structural work (permits, load-bearing walls, electrical rough-in), you'll need certified architectural drawings — Coohom's output is not a substitute for those. For furniture layout, paint selections, and interior finish decisions, a Coohom floor plan is precise enough to hand directly to tradespeople.

What file formats can I export?

PNG and PDF for 2D plans; JPG and PNG for 3D renders; shareable live-view URL for walkthroughs. Enterprise accounts also support CAD export.

Ready to put your measurements to work? Start your Coohom floor plan now — it's free, runs in any browser, and your first design is usually done in under an hour.