3D Interior Design Software: The 2026 Comparison

If you want to build a room in 3D and walk around it before you buy a single piece of furniture, HomeByMe, Roomstyler, and Planner 5D are the tools most people land on first. RoomSketcher and Live Home 3D suit anyone who needs a cleaner, more precise floor plan. SketchUp is the one to learn if you want real 3D modeling control, not just a furnished template.

This guide compares them on the thing that actually matters for this kind of software: can you build an accurate room, place real furniture in it, and see it from any angle, including a walkthrough. We'll also show you where FORMAS.AI fits, and where it honestly doesn't.

What "3D Interior Design Software" Actually Means

Two different categories get lumped under this search term, and mixing them up wastes your time.

The first category is room planners. You draw a floor plan, add furniture and decor items from a catalog, and the software builds a 3D model you can rotate, walk through, or export as a photorealistic render. HomeByMe, Roomstyler, Planner 5D, RoomSketcher, and Live Home 3D all work this way.

The second category is general-purpose 3D modeling software. SketchUp is the clearest example: it gives you real geometry tools instead of a fixed catalog, so you can model custom cabinetry, odd angles, or a full house instead of just dropping in premade furniture.

A third group, AI-native visualization tools such as FORMAS.AI and Gendo, works from a sketch, photo, or existing 3D file rather than a blank floor plan. That's a different workflow, and we'll be direct about what it does and doesn't replace.

If you came here from a broader best interior design software search, you're in the right place too: every tool below builds an actual 3D model you can view from any angle, which covers the 3D end of that search directly. Several of the room planners here, including HomeByMe and Roomstyler, also handle a straightforward 2D floor plan just fine if that's all a given project needs.

How to Create Interior Designs in 3D, From a Single Room to a Full House Design

Most room planners in this comparison follow the same rough workflow, whether you're testing design concepts for a single room or a full house design across multiple levels.

1. Start from a base layout: draw your walls and rooms from scratch, or upload a blueprint if the tool has AI features for floor plan recognition.
2. Add furniture and decor items from the catalog, then arrange furniture until the room layout works in both 2D and 3D.
3. Adjust materials, lighting, and adding doors or windows to match the real space.
4. Export or share the result as a photorealistic render, a walkthrough, or a design concept to shop from.

This is also where a free interior design tool earns its keep. You can test a few design concepts against your real dimensions and make informed decisions about what to actually buy, before you design your dream home in a paid tier or commit to building out a full 3D home.

3D Interior Design Software Compared

• HomeByMe: Free plan: 2 projects, 5 Full HD images. Furniture catalog: 90k+ branded products. Real-time walkthrough: yes (3D screenshots). Paid entry price: Essentials tier (price varies by region). Best for: homeowners who want branded products.
• Roomstyler: Free plan: unlimited use in-browser, 2 floor plan uploads/year free. Furniture catalog: a large in-browser library; Roomstyler's own current site doesn't publish an exact item count, though third-party listicles cite figures north of 120,000 items, so treat that specific number as an unverified third-party estimate rather than a confirmed catalog size. Real-time walkthrough: yes, browser-based 3D view. Paid entry price: paid exports/upgrades priced in-app. Best for: quick sandbox layouts, no install.
• Planner 5D: Free plan: unlimited projects, \~50% of catalog. Furniture catalog: 8,000+ items. Real-time walkthrough: yes, plus 360° walkthroughs on Professional. Paid entry price: $19.99/mo (Premium). Best for: beginners who want AI floor plan recognition.
• RoomSketcher: Free plan: 1 user, limited features, watermarked. Furniture catalog: limited on free tier, full library on Pro. Real-time walkthrough: yes, Live 3D Floor Plans on Pro. Paid entry price: $12/mo (Pro, 5 credits/mo). Best for: real estate professionals ordering polished floor plans.
• Live Home 3D: Free plan: free version, 2 stories max. Furniture catalog: built-in object library. Real-time walkthrough: yes, plus panorama/video export. Paid entry price: $49.99 lifetime (Standard, Windows). Best for: a one-time purchase instead of a subscription.
• SketchUp: Free plan: SketchUp Free (web, non-commercial). Furniture catalog: 3D Warehouse (community models). Real-time walkthrough: yes, full 3D navigation. Paid entry price: $10.75/mo billed annually (Go). Best for: custom modeling beyond a furniture catalog.
• FORMAS.AI: Free plan: 500 credits on signup, then 50/month. Furniture catalog: none; imports your own GLB, GLTF, OBJ, FBX, STL, Rhino 3DM, or PDF files instead. Real-time walkthrough: not a drag-and-drop room planner. Paid entry price: Starter, $19/month (750 credits/month). Best for: generating visuals from an existing sketch, photo, or model.

Prices and free-plan limits change. We checked each vendor's own pricing page in September 2026; confirm current terms before you commit.

HomeByMe: Free Floor Plans With a Big Product Catalog

HomeByMe's free Starter plan gives you 2 projects and 5 Full HD images, plus unlimited 2D and 3D screenshots while you work, according to HomeByMe's own offers page. That's enough to test a single room or a small apartment without paying anything.

The catalog is the real draw. HomeByMe lists more than 90,000 branded products, so what you place in your 3D model often matches something you can actually buy. If you're furnishing a real space and want your interior design ideas to map to real SKUs, this matters more than raw furniture count.

The trade-off: the free tier caps you at 5 Full HD images, and 4K renders, unlimited images, and 3D model import require the Essentials or Pro subscription. If you only need a couple of photorealistic images to share with a partner or client, the free version works. If you're iterating a lot, you'll hit the wall fast.

Roomstyler: A Free Browser Sandbox for Quick Room Layouts

Roomstyler runs entirely in your browser, nothing to install, and it's free to use for building and decorating a room, per Roomstyler's own planner page. You sign up, pick a base layout or start from scratch, and start designing with drag and drop furniture placement.

Where it's limited: uploading your own existing floor plan to build on is capped at 2 per year on the free account, according to Roomstyler's own planner page. That's fine for a DIY enthusiast testing a living room layout, and it's the wrong tool if you're a design professional who needs to bring in multiple client floor plans a month.

Roomstyler's community angle is also worth knowing about. You can browse other users' room layouts for interior design ideas and mood boards before you touch your own project, which is a genuinely useful feature the other tools on this list don't lead with.

Planner 5D: The Biggest User Base and an AI Floor Plan Reader

Planner 5D says its platform has been used by more than 100 million homeowners and professionals to create and improve over 540 million homes, according to Planner 5D's own homepage. That's the largest claimed user base of any tool in this comparison, though it covers the whole platform, not just active accounts.

The free plan includes unlimited projects and roughly half of the 8,000-item furniture library, per Planner 5D's own pricing page. Upgrading to Premium ($19.99/month or $59.99/year) adds the full catalog, AI-powered floor plan recognition that turns an uploaded sketch or photo into an editable base layout, and standard renders. Professional ($49.99/month or $399.99/year) adds unlimited 4K renders, custom 3D model uploads, and CAD export.

The AI floor plan recognition feature is genuinely useful if you're starting from a blueprint or a hand-drawn sketch instead of an empty canvas. It saves the tedious part of tracing walls by hand.

RoomSketcher: Credits-Based Output for Real Estate Professionals

RoomSketcher's free plan is deliberately limited: 1 user, a reduced furniture library, and watermarked exports, according to RoomSketcher's own pricing page. It's a "try it" tier, not something you'd use to deliver client work.

Pro, at $12/month or $144/year, adds the complete furniture library, 3D photos, 360 views, Live 3D Floor Plans, and 5 monthly credits for ordering professionally drafted floor plans. Team, at $35/month or $420/year, supports 5 users and 20 monthly credits.

That credit system is the thing to understand before you buy. Credits cover higher-end outputs like professionally redrawn floor plans, not every image you generate, so a heavy month of client work can mean buying refill packs on top of the subscription. Real estate professionals ordering consistent, branded output for listings make up most of its user base, more than DIY homeowners.

Live Home 3D: A One-Time-Purchase Desktop Tool With Real CAD Precision

Live Home 3D is the one tool here that doesn't push you toward a subscription. On Windows, Standard is $49.99 as a lifetime purchase or $19.99/year, and Pro is $99.99 lifetime or $39.99/year, according to Live Home 3D's own store page. Mac pricing runs similarly, with Standard and Pro sold as lifetime licenses.

The free version caps you at 2 stories, which rules it out for anything beyond a single-floor room or apartment layout. Standard removes that cap and lets you build an entire house across multiple levels. Pro adds terrain editing, elevation views, advanced materials and lighting, and photorealistic rendering.

If you want CAD-like precision, drawing walls, adding doors and windows to an exact measurement, rather than a stylized drag-and-drop experience, Live Home 3D is built for that. Someone comfortable with technical drawing will find it more intuitive than a total beginner will.

SketchUp: True 3D Modeling, If You're Willing to Learn It

SketchUp isn't an interior design tool with a furniture catalog bolted on. It's general-purpose 3D modeling software that happens to be one of the most common tools design professionals actually use for interiors, because it lets you model anything, not just what's in a preset library.

SketchUp Free is a genuinely free, browser-based version for non-commercial use, with 10GB of Trimble Connect cloud storage and access to the 3D Warehouse's searchable library of community-made models, according to SketchUp's own help documentation. Paid tiers start with Go at $10.75/month billed annually, which adds iPad access and unlimited cloud storage. Pro, at $33.25/month annually, adds the desktop modeler, 2D documentation with LayOut, and access to over 1,000 extensions. Studio, at $68.25/month annually, adds a Revit importer, point cloud modeling, and V-Ray rendering on Windows, confirmed on SketchUp's own plans and pricing page.

The honest trade-off: there's a real learning curve. You're not dragging a sofa onto a floor plan, you're building geometry. If you already think in 3D or you need to model something a furniture catalog can't cover, that investment pays off. If you just want to see how a couch looks in your living room this weekend, it's overkill.

Where FORMAS.AI Fits (and Where It Doesn't)

FORMAS.AI is an AI-native design platform that orchestrates 50+ specialist models to help you sketch, model, render, and visualize architecture and interiors from a starting image, sketch, or existing 3D file. It's a genuinely different workflow from the room planners above.

Here's where that matters. If you already have a floor plan, a photo of a room, or a 3D model in GLB, GLTF, OBJ, FBX, STL, Rhino 3DM, or PDF format, FORMAS.AI lets you bring that in and iterate on materials, lighting, and style without starting from an empty grid. It orchestrates those 50+ specialist models under one interface, with Freeform Studio as the one piece built in-house, rather than training a single foundation model of its own to handle every task.

Here's the other side of that trade-off. FORMAS.AI is not a drag-and-drop room planner: it doesn't include a shoppable furniture catalog the way HomeByMe does, and it isn't built for the real-time, walk-around-your-room-in-a-browser experience that Roomstyler and Planner 5D offer. Its workflow starts from an existing sketch, photo, or 3D file rather than an empty floor plan with a furniture catalog to browse.

One place FORMAS.AI differs from every tool in this comparison is format flexibility: none of the room planners above accept a Rhino 3DM or STL file as a starting point, and FORMAS.AI does. The free tier gives you 500 credits on signup, then 50 a month. Paid individual plans, per FORMAS.AI's own pricing page, are Starter at $19/month (750 credits/month, 3 saved 3D models), Go at $35/month (1,500 credits/month, 5 saved 3D models), Pro at $69/month (3,500 credits/month, 8 saved 3D models), and Pro Plus at $129/month (7,000 credits/month, 20 saved 3D models). Student seats run $19.90/month (3,500 credits/month), with a Student Pro+ tier at $39.90/seat/month (7,000 credits/month). A pooled-seat Studio plan is listed as coming soon with no published price, and Enterprise and Academic pricing is custom.

Also Worth a Look: Homestyler, Coohom, and Sweet Home 3D

A few more free tools come up often enough that they're worth a short mention, even outside the main comparison above.

Homestyler is a free, browser-based room planner with a catalog Homestyler's own site describes as 1M+ branded 3D furniture, updated weekly, plus an AR preview feature for viewing real branded products at scale in your space.

Coohom is another free, cloud-based option, with a library Coohom's own homepage lists at over 600,000 3D models, and AI-assisted layout suggestions to speed up the first draft of a room.

Sweet Home 3D is different from everything else here: it's fully open source under the GNU General Public License, according to Sweet Home 3D's own site, with no subscription, no watermark, and no feature locks. The included library is smaller, over 10,000 models and 400 textures, but you can import more. It's the only tool here with no account or subscription requirement at all.

None of these three change the core recommendation. They're solid free alternatives to HomeByMe and Roomstyler, not a different category of tool.

Export Options Are the Detail Most Buyers Skip

Before you commit to a home design tool, check what actually comes out of it. A JPEG or PNG render is fine for a mood board, but if you need a file you can open in another tool, that's a different requirement, and not every plan supports it.

SketchUp exports to its own SKP format plus common exchange formats, and Studio adds a Revit importer for the other direction. Live Home 3D exports video, panoramas, and stills across several image formats, with higher resolutions gated to Pro. FORMAS.AI works the other direction from most of these tools: it imports GLB, GLTF, OBJ, FBX, STL, Rhino 3DM, and PDF files you already have, rather than generating a new export format from a blank layout.

If your workflow depends on moving a 3D model between tools, check export options before you subscribe, not after you've built the room.

How to Choose Your Design Tool for This Interior Design Project

Start with what you're actually trying to produce, not the feature list.

HomeByMe and Homestyler get closest to a shoppable result, with real, buyable furniture in the catalog. Roomstyler and Sweet Home 3D offer a completely free sandbox with no watermark pressure. Planner 5D adds AI help reading an existing blueprint, useful when you're planning an entire house across multiple levels. RoomSketcher's credit system is built around client-ready output for real estate listings. Live Home 3D is sold outright instead of rented as a subscription. SketchUp is the only tool here built for modeling outside any furniture catalog, whether that's custom millwork or an unusual roofline.

And if you're starting from a sketch, a phone photo of a real room, or a 3D file you already have, and you want AI-assisted help turning that into a refined visual rather than building from a blank floor plan, that's the specific gap FORMAS.AI fills.

Most of these choices don't need a high-performance computer on your end; the heavy 3D rendering typically happens in the cloud rather than on your machine. The one exception is SketchUp Studio, whose built-in V-Ray rendering runs locally and is GPU-intensive, so budget for a capable graphics card if that local rendering is why you picked Studio specifically.

Frequently Asked Questions

What is the best 3D rendering software for interior design?

It depends on your starting point. For a furnished room built from scratch, Planner 5D and HomeByMe produce solid photorealistic renders on paid tiers. For custom geometry, SketchUp paired with a rendering extension gives you more control.

What 3D program does Joanna Gaines use?

There's no verified, publicly documented statement from Joanna Gaines or her team naming a specific 3D interior design tool. Treat any specific claim you see about this as unconfirmed.

Is there a free 3D model for interior design?

Yes. HomeByMe, Roomstyler, Planner 5D, Homestyler, Coohom, SketchUp Free, and Sweet Home 3D all let you build a 3D model at no cost, though each caps something different, projects, exports, catalog access, or resolution.

Can I design my home in 3D for free?

Yes, for a single room or a small project. Roomstyler and Sweet Home 3D place the fewest limits on free use. Larger, multi-level homes are more realistic on a paid plan across most of these tools.

How much does a 3D interior designer charge?

Hiring a human designer costs far more than any software subscription on this list, and rates vary widely by market and project scope. Testing layouts yourself in a free tool first is a reasonable way to arrive at a project brief before you pay for professional design work.

What is the best free app for 3D interior design?

Roomstyler and Sweet Home 3D place the fewest restrictions on free use. HomeByMe's free tier is worth it specifically for its branded catalog, even with its lower image cap.

What is the best 3D program for interior design?

For most people furnishing a home, Planner 5D or HomeByMe cover the job end to end. For design professionals who need custom modeling beyond a catalog, SketchUp adds deeper modeling control, with a real learning curve attached.

Is 3D interior design software the same as professional software like Chief Architect?

No. Consumer 3D interior design software like the tools in this comparison is built around a furniture catalog and a fast, drag-and-drop workflow. Professional home design software aimed at builders and architects, including tools like Chief Architect, typically adds construction documentation and framing detail that these tools don't attempt to replace.

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