Free 3D interior design
3D interior design,free in your browser.
Cona is free 3D interior design software that runs in your browser. Build your room at its real size, by drawing it or uploading a photo, render or sketch of the floor plan, then design everything in 3D: the floor, the wall colours, the lighting and the furniture, all real products at their real sizes. Look around from any angle, switch between day and night, and share the room by link. No sign-up, nothing to download.
Free · no sign-up · nothing to download
Creative Studio
Warm Nordic
Free ✦Vintage Eclectic
How it works
Design your interior in 3D in three steps
Build the room
Draw the walls to size or let the AI trace an image of the floor plan in about 20 seconds, then place the doors and windows.
Set the surfaces
Choose the floor, paint the walls or give them a texture, and let the ceiling lights fill the room. Switch the windows between day and night.
Furnish it
Add real furniture from the catalog at its real size, or tap Furnish and let Cona AI place a full set, then look around from every angle.
Real, not rendered guesses
Everything in the room is to scale
The walls are your walls and the furniture is real products at their real sizes, so the 3D room is something you can build, not just look at. Every piece has a price and a link to its store.
FAQ
Frequently asked questions
Is the 3D interior design tool free?+
Yes. Building the room, designing it in 3D and sharing it are free, with no sign-up and nothing to download.
Can I change the walls and floor?+
Yes. Choose the floor, set the wall colour or a wall texture, and the ceiling lights adjust to the room.
Does it work on a phone?+
Yes. It runs in the browser on phones, tablets and laptops, and you can add it to your home screen.
Is the furniture real?+
Yes. Every piece is a real product with a real price and size, and links to the store that sells it.
by Nikita Losenco · Founder & CEO, Cona
Last reviewed November 2026
Your interior,in 3D, for free.
Your room at real size, real furniture, every angle. No sign-up to start.
Design in 3D