How-to guide
How to design aroom in 3D.
Five steps, no experience needed. Recreate your space, fill it with real furniture, and see the whole thing in 3D before you buy a thing.
The steps
From empty room to designed
Recreate your room
Start from an empty room and shape the walls to your real measurements, so everything you add is to scale.
Add doors, windows, and what stays
Mark the openings and anything that is not moving. An honest starting point makes the whole layout honest.
Drag in furniture to scale
Place the big pieces first, the bed or the sofa, then build around them. Move things until the room flows.
View it from every angle
Look at the room in 3D from any corner. Check the walking room, the sight lines, and how it feels.
Shop the look
When it feels right, buy the real pieces that fit. In Cona the furniture is from brands you know.
A few tips
Make it feel right
- Start with the biggest piece. The bed or sofa sets the room; everything else works around it.
- Leave walking room. About 30 inches for paths and 18 inches between a sofa and coffee table.
- Use your real measurements. To-scale is the whole point. Guessed dimensions lead to returns.
FAQ
Frequently asked questions
How do I design a room in 3D?+
Recreate your room to scale, add the doors and windows, drag in furniture, view it from every angle, then shop the pieces that fit. A browser tool like Cona walks you through it in minutes.
Do I need design experience?+
No. The steps are made for first-timers. You drag and drop, the room updates in 3D as you go, and nothing is permanent, so you can try things freely.
Is it free?+
In Cona, yes. You can design as many rooms as you like in your browser, with no project cap and no credits.
Can I design a room on my phone?+
Yes. Cona runs in your browser on both desktop and mobile, with nothing to install.
How long does it take?+
A first layout takes a few minutes. Recreating the room is the slowest part, and from there furnishing it is quick.
Can I buy the furniture I place?+
Yes. Cona's catalog is real furniture from brands like IKEA, CB2 and Herman Miller. Check the fit in 3D, then buy the pieces you love.
by Nikita Losenco · Founder & CEO, Cona
Last updated June 2026
Design your roomin minutes.
Free, in your browser, no experience needed. Start with an empty room and make it yours.
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