22 free interior design tools
Design your room with confidence
Color palettes, style quizzes, furniture layouts and pro calculators — everything runs instantly in your browser. No app, no upload, no sign-up.
- No sign-up
- Works on mobile
- Private — nothing uploaded
- Unlimited & free
Start with our flagship tools
The three tools our visitors use most when planning a room makeover.
Explore by task
From picking paint to planning lights — small tools for every step.
Popular tools
Instant calculators and generators used by thousands of DIY designers.
How it works
Three simple steps from blank room to a plan you can act on.
1
Pick a tool
Choose a calculator, quiz or planner made for your exact task.
2
Enter your room
Type dimensions, pick colors or answer a few visual questions.
3
Save & act
Copy results, export your plan and save everything to favorites.
Design guides
Deep, practical articles written to make you a smarter designer.
Frequently asked questions
Are all tools really free?
Yes. Every tool on Interior Design Studio is free and unlimited during our beta, with no sign-up and no daily limits.
Do I need to upload a photo of my room?
No. None of our tools require a photo. Calculators, the color generator and the room planner work from the dimensions and choices you enter, so your images never leave your device.
Do the tools work on a phone?
Absolutely. Every tool is designed mobile-first, including the drag-and-drop furniture planner, which supports touch.
How do I save my results?
Tap the heart icon to save a tool, palette, quiz result or layout. Saved items live in your browser (Favorites in the top menu) on the same device.
How accurate are the calculations?
They follow standard interior design rules of thumb and product coverage rates. Treat them as solid planning estimates; always confirm exact quantities with paint and flooring retailers.
Ready to redesign your space?
Join thousands of homeowners planning better rooms today — free and unlimited.
Explore the tools