Your youngest child has just left for college, and you've decided it's finally time to downsize from your family home to a smaller townhouse in Minneapolis. The move feels like a fresh start, but there's one problem: the oversized sectional that anchored your old living room takes up nearly an entire wall in the new place. You've started browsing smaller sofas, compact dining tables, and storage pieces, but it's difficult to tell what will actually fit from product photos alone.
Choosing furniture for a smaller space isn't just about finding pieces you love. A sofa might fit perfectly against the living room wall but struggle to make it through the front door. A dining table could look compact online yet leave barely enough room to pull out the chairs. And even with measurements in hand, picturing how everything fits together can be surprisingly tricky.
The best furniture sizing apps help you avoid those mistakes before buying. Some let you build accurate floor plans, others place furniture at scale using augmented reality, and a few help you check tricky doorways and hallways before moving day. This guide compares ten apps for choosing the right furniture size in 2026, including what each does well and where it fits into your planning process.
Key Takeaways
- Room fit and delivery fit are different checks. A sofa may fit the wall but not clear a hallway or stairwell.
- Manual dimensions remain useful. You can plan furniture layouts without LiDAR or a phone camera.
- App strengths vary. Some focus on measured plans, others on AR previews, delivery clearance, or coordinated furniture selection.
- Retailer catalogs affect your choices. Single-brand planners limit what you can preview, while multi-retailer approaches broaden the selection.
- First Chair adds the design context. Its room-based concepts help you consider real furniture together rather than treating every piece as a separate sizing decision.
- Verify critical measurements. Check doorways, turns, elevators, and product dimensions with a tape measure before ordering.
How Furniture Size Apps Work: AR, 2D Layouts, 3D Planners, and Measurement Tools
Most furniture size apps fall into one of four buckets. AR point-measurement tools use the camera to estimate a single distance or wall length. LiDAR-based 3D scanners are built on frameworks like Apple's RoomPlan. They guide a camera sweep around a room and output a 3D floor plan with dimensions and furniture types attached to each recognized component. 2D canvas planners skip the camera entirely and let you draw walls, doors, and furniture shapes to a measured scale by hand.
Full 3D design platforms sit on top of a furniture catalog, showing pieces at manufacturer-spec sizes so you can judge scale against your actual walls. Apartment Therapy notes that furniture and decor outlets build their own AR apps on this same basic idea, letting shoppers see a piece sized against a photo of their space before buying.
What's the Difference Between a Room Planner and a Doorway Fit-Checker?
A room planner estimates how furniture fits inside open floor space, while a doorway fit-checker tests whether that same piece can physically pass through a narrow opening on the way in. Most of the apps below do the first job. Only one, Will It Fit, is built specifically around the second.
1. First Chair
First Chair starts with your actual room and your style preferences, then develops concepts using real furniture from retailers such as West Elm, CB2, Crate & Barrel, Pottery Barn, and Lulu & Georgia. It helps you consider the scale and visual balance of pieces together, although you should still verify exact product dimensions and delivery clearance before buying.
Key features:
- Room-based furniture and decor concepts
- Coordinated, purchasable pieces from multiple retailers
- Furniture selections informed by your space and style
How it differs from other sizing apps: First Chair emphasizes coordinated furniture choices, not technical floor-plan drafting or doorway-clearance calculations.
2. Will It Fit
Will It Fit stands a piece of furniture in a room at its real size, then checks whether it can pass through a chosen opening with a margin measured in centimeters. Per the app's Google Play listing, you either pick a ready-made stand-in (sofa, bed, wardrobe, fridge, TV) that already carries a standard retail size, or type the width, depth, and height straight from a seller's listing. The object renders at true scale with its dimensions on screen, and the whole check works without opening the camera, which matters for a quick measurement in a dim stairwell. It's Android-only, so iPhone owners checking a doorway need a different tool.
Key features:
- Custom width, depth, and height entry
- Doorway and hallway clearance checks
- No camera required
How it differs from First Chair: Focuses on delivery-path clearance, while First Chair helps coordinate real furniture for the room.
3. Planner 5D
Planner 5D supports precise dimensions for walls, rooms, doors, windows, and most furniture pieces, per the app's own product pages. Planner 5D's AR feature creates full-size interior simulations that display furniture at real scale as you walk around a room, drawing from a catalog of hundreds of interior pieces. Its Scan Room tool works on compatible LiDAR iPhones and iPads, though the core measuring and drawing tools don't require a scan at all since dimensions can be entered by hand. The free plan covers the core drawing workflow, while Premium and Professional add rendering and collaboration features.
Key features:
- Measured 2D and 3D floor plans
- AR furniture placement
- Optional LiDAR room scanning
How it differs from First Chair: Emphasizes floor-plan drawing and scale checks; First Chair focuses on cohesive, shoppable room concepts.
4. Homestyler
Homestyler builds its furniture models to manufacturer specifications. Rotate, resize, or reposition any piece and the 3D view updates immediately, per the app's own comparison page. Full 3D functionality on Homestyler works best on desktop Chrome; the mobile browser prompts a switch to desktop. The free version limits high-quality renders and locks some furniture models, and the measurement workflow has a short learning curve. AI Boost credits, sold separately, add rendering features on top of the free base plan.
Key features:
- 3D furniture layout and resizing
- Manufacturer-spec furniture models
- Browser-based room planning
How it differs from First Chair: Provides hands-on 3D modeling, while First Chair curates coordinated real pieces around your space and taste.
5. IKEA Kreativ
IKEA Kreativ is a virtual room designer that shows IKEA furniture and decor in your own space before purchase, with pieces sized to scale so there's no separate measuring step, per IKEA's own support pages. On LiDAR-enabled phones and tablets, the app scans a room to build a 3D model; on the web, a room builder accepts manually entered dimensions instead. You can erase existing furniture, then add or swap in catalog pieces, and a Full Room Scan mode builds a digital twin starting from an empty space. The catalog is limited to IKEA's own line, so it sizes furniture from that brand only.
Key features:
- To-scale IKEA furniture placement
- Room scanning on compatible devices
- Manual web room builder
How it differs from First Chair: Uses IKEA products only; First Chair works across multiple furniture retailers.
6. Roomantic
Roomantic uses a phone or tablet's LiDAR sensor to capture a floor plan, then can import furniture directly from a web product link, pulling in its dimensions and price and placing it at its measured footprint, per the app's own listing. That link-based import is unusual among the apps here. Instead of dragging a generic sofa shape and resizing it by eye, the piece appears already sized to the actual product you're considering, with its metadata attached. The requirement is a LiDAR-capable iPhone, which rules out older phones and most Android devices.
Key features:
- LiDAR room capture
- Product-link dimension import
- Manual floor-plan drafting
How it differs from First Chair: Imports individual product measurements into a plan; First Chair assembles a coordinated room concept from real retail pieces.
7. Rooms AI
Rooms AI: Room Planner added custom furniture creation and a showroom in its September 4, 2026 update, along with resize, rotation, and fit-and-scale visualization tools, per the app's own listing. The planning workflow includes flipping furniture before rendering, plus a 3D view for checking fit and scale against the room before committing to a piece. The built-in furniture library is smaller than catalog-driven tools, so entering custom dimensions from a seller's listing carries more of the sizing work.
Key features:
- Custom furniture creation
- Resize and rotation controls
- 3D fit and scale previews
How it differs from First Chair: Centers on building and adjusting models, rather than curating a complete shoppable room like First Chair.
8. Room Planner
Room Planner: Floor Plan 3D includes tools for measuring height, width, distance, wall length, and floor area alongside furniture size, and supports sharing a finished scan with other people involved in a project, per the app's own listing. That export and share function matters for anyone coordinating with a contractor, a mover, or a family member who isn't standing in the room during the scan. It leans toward the measurement and documentation side of the job rather than furniture shopping.
Key features:
- Room and furniture measurements
- Floor-area and wall-length checks
- Sharing finished scans
How it differs from First Chair: Prioritizes measurement records and sharing, while First Chair focuses on selecting pieces that work together visually.
9. Plan Your Room
Plan Your Room is a 2D room planner built around checking furniture fit before moving or buying, per the app's own listing. It supports room drawings, doors, windows, common furniture shapes, and adjustable furniture sizes on a measured 2D canvas. There's no camera, no LiDAR, and no account required to use it, which makes it one of the more accessible entries here for anyone without a newer phone. The shapes are generic rather than tied to a retailer's catalog, so you still need to know the actual dimensions of the piece you're considering before entering them.
Key features:
- Measured 2D layouts
- Adjustable furniture shapes
- No camera or LiDAR required
How it differs from First Chair: Uses generic furniture shapes for spatial planning; First Chair draws on real retail furniture for room concepts.
10. HomeByMe
HomeByMe is a 3D room and kitchen planning platform from Dassault Systèmes.
Key features:
- 3D room planning
- Kitchen and furniture layout visualization
- Web-based design workflow
How it differs from First Chair: Focuses on creating 3D plans, while First Chair focuses on coordinating purchasable furniture across retailers.
Furniture Size App Comparison: Platforms, AR, LiDAR, Catalogs, and Export Options
Grouping the ten apps above by how you'd actually access them:
- iOS only: Roomantic (LiDAR required), Rooms AI, Room Planner: Floor Plan 3D, Plan Your Room
- Android: Will It Fit, IKEA Kreativ
- Room-based furniture selection: First Chair (access via web onboarding)
- Cross-platform or web: Planner 5D, Homestyler, HomeByMe, IKEA Kreativ's web builder
- LiDAR required or optional: required on Roomantic; optional on Planner 5D (Scan Room) and IKEA Kreativ (Full Room Scan)
- Works without a camera: Will It Fit, Plan Your Room, Homestyler's manual entry, IKEA's web builder
- Tied to one retailer's catalog: IKEA Kreativ
- Open or multi-brand catalog: First Chair, Homestyler, Planner 5D, Roomantic (via product-link import)
- Exports or shares a finished plan: Room Planner: Floor Plan 3D
How to Choose a Furniture Size App
Match the App to the Actual Job
If the question is "will this sofa get through my door," Will It Fit or a similar fit-checker answers it directly. If the question is "how will this room look furnished," a 3D design platform like Homestyler or Planner 5D is the better match. Using a room-layout app to answer a doorway question, or the reverse, tends to waste time.
Check What Your Device Can Actually Do
LiDAR ships on iPhone 12 Pro and later Pro models and recent iPad Pros. If you're on an older phone or Android, skip the apps that require a scan (Roomantic) and lean on ones built for manual dimension entry (Plan Your Room, IKEA's web builder, Planner 5D without Scan Room).
Decide How Much Free Access You Actually Need
The paid tiers on Planner 5D and Homestyler remove caps on renders and furniture models that the free versions carry.
How Accurate Are Furniture Size Apps?
Furniture size apps are reliable for estimating room layout and general scale, but entryway and hallway clearances still benefit from a tape measure to confirm before delivery. Apartment Therapy advises measuring the height and width of a room to get true proportions before shopping, rather than relying on a photo or a listing's square footage alone.
AR placement tools are built to show scale against what your camera sees, which is useful for a sofa in an open room, but a narrow hallway turn or a staircase landing is a measurement problem, not a visualization problem.
How to Measure Furniture and Entryways Before Buying
Start with the piece itself: width, depth, height, and the diagonal measurement if it needs to tilt through an opening. Then measure every access point between the truck and the final spot: the front door frame, any interior doorways, the narrowest point in each hallway, stair width and turn radius if there's a landing, and ceiling height if the piece has to tilt overhead to clear a railing.
Apartment Therapy's guidance on scaling furniture points out that major retailers build their own AR apps around exactly this kind of photo-and-measurement check, which is a reasonable first pass before you measure by hand. Write every number down before you buy, not after the truck arrives.
Furniture Fit Checklist: Room, Doorway, Hallway, Staircase, and Elevator
- Room: floor clearance around the piece, plus room to open drawers, doors, or a reclining mechanism
- Doorway: width and height of the frame, not just the opening, since trim cuts into clearance
- Hallway: the narrowest point, including light fixtures or radiators that stick out
- Staircase: width, turn radius, and ceiling height at the landing if the piece needs to tilt
- Elevator: interior depth, width, and the posted weight limit, if the building requires it
Your Room Still Needs the Right Pieces, Not Just the Right Math
Measuring the doorway tells you a sofa will make it inside. It doesn't tell you whether that sofa matches the rug you already own or the lamp you've had pinned for months.
First Chair starts from your actual room and your taste, then builds concepts from real pieces pulled across retailers like West Elm, CB2, Crate & Barrel, Pottery Barn, and Lulu & Georgia, so the sizing problem and the matching problem get solved at the same time.
Every concept arrives already matched to your space (right scale, right style, right retailer), so you're not resizing a generic shape or guessing how a finish reads against your floors. The clearance check still matters. It just isn't the whole job. Start with your room and see the concepts First Chair builds from it.
Frequently Asked Questions
Do furniture layout apps work on Android?
Some do. Will It Fit and IKEA Kreativ are both available on Android, and Homestyler and HomeByMe work through a web browser on any platform. Several others on this list, including Roomantic and Rooms AI, are iOS only.
Do you need an iPhone Pro or LiDAR for a furniture size app?
No. LiDAR speeds up room scanning on compatible iPhones and iPads, but Plan Your Room, Will It Fit, and IKEA's web-based room builder all work with dimensions entered by hand, no scan required.
Which app lets you use real furniture from a store?
IKEA Kreativ shows IKEA's own catalog at true scale, Homestyler's furniture models are built to manufacturer specifications, and Roomantic can import a specific product's dimensions and price straight from a web link.
How do I check if furniture will fit through my door?
Measure the width, height, and depth of the piece, then measure the door frame at its narrowest point, including trim. For tight turns, record the diagonal of the furniture. Will It Fit is the only app on this list built specifically to test doorway and hallway clearance; a tape measure at the tightest point is still the most reliable check for clearances under a few inches.
