How to Create a Floor Plan with iPhone LiDAR Room Scan for Free

Measuring a room used to mean tape measures, graph paper, and a lot of back-and-forth checking. If you have an iPhone Pro or iPad Pro with a LiDAR sensor, KIRI Engine's LiDAR Room Scan can turn a room capture into a measured floor plan directly on your device. Room Scan is available on the free plan and does not require extra hardware beyond a LiDAR-equipped iPhone or iPad.

This guide covers how to create a floor plan with iPhone LiDAR, what the Room Scan output looks like, and when this workflow is useful for renovation planning, property documentation, and quick room measurement.

Quick Answer

KIRI Engine Room Scan captures a room with iPhone LiDAR and generates a 2D floor plan with room measurements.

You can create a floor plan with iPhone LiDAR using KIRI Engine's Room Scan mode. On a LiDAR-equipped iPhone or iPad Pro, Room Scan captures room boundaries, generates a 2D floor plan with room measurements, and exports the result as USDZ. Room Scan is available on the free plan. Processing runs entirely on-device with no upload or internet connection required.

What You Need

• A supported device: Any iPhone or iPad with a LiDAR sensor. This includes iPhone 12 Pro / Pro Max and all later Pro models (iPhone 13, 14, 15, 16 Pro series and newer), plus iPad Pro models from 2020 onward (11-inch and 12.9-inch). Standard iPhone models (non-Pro) do not have a LiDAR sensor.

• KIRI Engine app: Free to download on the App Store. No subscription required for Room Scan.

• A room: Works best in enclosed spaces with clear walls, floors, and corners.

No extra hardware, markers, or calibration targets are required. No internet connection is needed — Room Scan processes entirely on-device.

Room Scan requires a LiDAR-equipped iPhone Pro or iPad Pro. Standard iPhone models do not include the LiDAR sensor.

How to Scan a Room: Step by Step

Step 1: Open the app and start a new scan

Tap the + button on the home screen, select LiDAR Scan, then select Room Scan. You will enter the scanning view.

Start a new scan in KIRI Engine, choose LiDAR Scan, then select Room Scan to begin creating a floor plan.

Step 2: Scan the first wall

Begin by pointing the phone at a wall and moving it up and down to capture the wall surface. The app starts building the room layout as it registers the first wall boundaries.

Step 3: Move around the room

Walk slowly around the room, panning the camera to cover all walls and surfaces. As the app identifies objects and structural elements, it marks them automatically. Recognized items appear at the bottom of the screen as they are captured.

Step 4: Include major obstacles

Walk around any large furniture, built-in shelves, or structural columns you want reflected in the floor plan. The scan captures these as part of the space geometry.

Room Scan can capture major furniture, walls, and room boundaries as part of the floor plan scanning process.

Step 5: Choose to continue or finish

When a room is fully captured, the app shows a preview of the scanned space with two options: Continue with a new scan or Finish. To add more rooms, tap Continue. When starting the next scan, make sure areas already scanned are still visible and this allows the app to merge the scans into a larger floor plan.

After scanning one room, KIRI Engine lets you continue with a new scan to cover more areas or finish the floor plan.

Step 6: Select which rooms to include

After all rooms are scanned, the app brings you to a room selection screen. You can choose which rooms to show in the final floor plan, set the room type for each space, and add more scans if needed. Tap Done when finished.

After scanning multiple rooms, KIRI Engine lets you choose which rooms to include in the final floor plan.

Step 7: Review and export

KIRI Engine processes the LiDAR data locally on-device and generates:

• A 2D floor plan with dimension annotations, including room length, width, and area

  KIRI Engine Room Scan generates a 2D floor plan with room dimensions, wall lengths, and area measurements.

• A 3D layout view showing the full space in three dimensions

  The 3D layout view lets you inspect the scanned room layout in three dimensions before exporting the floor plan.

Pan, zoom, and inspect the plan in the app. To export, tap the share button and choose your format. The floor plan exports as .usdz. See all supported export formats for what each format is compatible with.

What the Output Looks Like

The 2D floor plan shows room boundaries with labeled dimensions. KIRI Engine calculates:

• Room length and width at multiple points

• Total floor area

• Doorways and openings if captured clearly in the scan

The 3D layout view renders the same data as a navigable 3D environment, useful for visualizing furniture placement or sharing a spatial impression with someone who hasn't seen the room.

KIRI Engine Room Scan generates a measured 2D floor plan and a 3D layout view that can be inspected before export.

The .usdz export can be opened in:

• Apple's AR Quick Look (tap the file on any iPhone/iPad to view in AR)

• Supported 3D tools that accept USDZ files, including design and modeling software

KIRI Engine's LiDAR mode also includes Scene Scan and Object Capture for other use cases. Room Scan is specifically optimized for interior floor plan generation.

Tips for a Better Room Scan

Move slowly. The LiDAR sensor builds a depth map continuously. Fast movement leaves gaps. A deliberate walking pace gives the system time to register each surface.

Get the corners. Walls meeting at corners are the structural anchors of the floor plan. Spend an extra moment in each corner to make sure the edge guidelines connect cleanly.

Natural light helps with texture, but LiDAR works in the dark. The LiDAR sensor operates independently of the camera. It uses infrared pulses, not visible light. Even a dark room can still be scanned for geometry. Light helps if you also want photo-quality surface texture.

Scan each room separately for multi-room spaces. For larger homes or offices, scan individual rooms and combine them in-app. Trying to capture multiple connected rooms in a single pass can introduce drift in the boundary lines. See the LiDAR scan tutorial for a full walkthrough.

Three Use Cases Where This Actually Saves Time

1. Viewing a property

When you're walking through an apartment or house, you usually only have a short visit to understand the layout. Photos can show what each room looks like, but they do not always capture room size, wall length, doorway positions, or how the spaces connect.

A quick Room Scan gives you a floor plan with measurements to reference later. You can check room dimensions, compare the relationship between spaces, and decide whether your furniture will actually fit. This is especially useful when you are comparing multiple apartments or houses in the same day.

Most people try to remember layouts or sketch rough drawings after a visit. A LiDAR floor plan is usually more useful than memory or a rough sketch, and it takes less time to create.

2. Planning a renovation or furniture purchase

Before ordering a sofa, planning a cabinet layout, or discussing a renovation with a contractor, you need usable room measurements. Room Scan captures the overall spatial layout, including walls, corners, alcoves, doorways, and irregular room shapes.

The exported floor plan can be shared with an architect, contractor, interior designer, or furniture retailer as a starting reference. It will not replace professional measurement for construction-critical work, but it is useful for early planning, layout decisions, and quick communication.

If you also need detailed 3D models of individual objects in the space, photogrammetry and LiDAR serve different purposes. Room Scan handles the room layout, while Photo Scan is better suited for individual objects with surface detail.

3. Documenting a space for insurance or rental listings

A measured floor plan can make property records, rental listings, and insurance documentation easier to understand. Instead of relying only on photos, you can provide a layout that shows room boundaries, approximate dimensions, and how the space is organized.

KIRI Engine's Room Scan produces this in minutes without professional survey equipment. It is included in the free planwith no export restrictions, making it useful for landlords, renters, agents, or anyone who needs a quick record of an interior space.

How This Compares to Other Room Scanning Options

Many LiDAR-based room scanning apps place advanced floor plan export, editing, or professional workflows behind paid tiers. KIRI Engine's Room Scan is available on the free plan, with no paywall on the scan itself or the basic export. For a broader comparison of free 3D scanning options, see Best Free 3D Scanner Apps (2026) With No Export Paywall.

For professional as-built documentation at scale, dedicated LiDAR hardware (Matterport, Leica) still offers higher accuracy. For everyday use (property viewing, renovation planning, furniture layout), phone-based LiDAR is often practical enough, and KIRI Engine's Room Scan is a practical free option for generating a usable floor plan with measurements. If you're deciding between LiDAR and photogrammetry for your workflow, this comparison of LiDAR vs photogrammetry covers the tradeoffs in detail.

Frequently Asked Questions

Which iPhones support LiDAR Room Scan? Room Scan requires a LiDAR sensor. Confirmed supported models include iPhone 12 Pro, iPhone 12 Pro Max through the iPhone 16 Pro series, and all newer iPhone Pro and Pro Max models. Also supported on the 11-inch and 12.9-inch iPad Pro (2020) and all later iPad Pro models. Standard iPhone models (non-Pro) do not include a LiDAR sensor and cannot use Room Scan.

Is Room Scan free? Yes. Room Scan is included in KIRI Engine's free plan. No subscription is required to scan or to export the floor plan.

How accurate is the floor plan? Accuracy depends on scanning speed and how thoroughly corners and edges are covered. Slower, more deliberate scans with complete corner coverage produce tighter results. For professional-grade measurement requirements, dedicated LiDAR hardware will outperform phone-based scanning, but for everyday tasks like furniture planning, renovation estimates, and property documentation, Room Scan produces results that are reliable enough to act on.

What's the difference between Room Scan and Scene Scan? Room Scan is designed for enclosed spaces: it generates a 2D floor plan with measurements and calculates room area. Scene Scan captures open environments and larger spaces as a 3D model without generating a floor plan or dimension measurements. For rooms and interior measurement, Room Scan is the right mode. A full breakdown of all LiDAR sub-modes is available in the LiDAR Scan Mode guide.

Can I scan multiple rooms and combine them? Yes. You can scan each room individually and combine them into a larger floor plan within the app. This makes it straightforward to document a full apartment or multi-room home in a single session.

What can I do with the exported USDZ file? USDZ opens in AR Quick Look on any iPhone or iPad (tap the file in Files or Mail to view the room in augmented reality at real scale). The file can also be imported into supported 3D tools that accept USDZ for further measurement and editing.

Does Room Scan work on Android? No. LiDAR Room Scan requires the LiDAR sensor found in iPhone Pro and iPad Pro models. It is not available on Android devices. Android users can use KIRI Engine's Photo Scan mode for object scanning or 3D Gaussian Splatting for environment capture.

What is AI-Enhanced LiDAR, and is it related to Room Scan? AI-Enhanced LiDAR is KIRI Engine's Pro-level enhancement for Scene Scan, introduced in v3.14. It applies cloud-based AI processing to improve raw LiDAR Scene Scan output, reducing surface noise and improving structural consistency. It applies to Scene Scan only and is not available for Room Scan. Room Scan uses standard local on-device processing, which produces reliable results for floor plan generation. Full details in the v3.14 release announcement.

Get Started

KIRI Engine is free to download. A free account is required to use the app. Sign up takes under a minute. Once logged in, LiDAR Room Scan is available immediately with no subscription needed.

Download on the App Store · Try KIRI Engine on Web

Related reading

• LiDAR Scan: feature overview

• LiDAR Scan Mode: all modes explained

• iPhone LiDAR 3D Scanning Guide

• Scene Scan Guide

• Object Capture Guide

• Best LiDAR 3D Scanner Apps for iPhone (2026)

• What is AI-Enhanced LiDAR?

• 3D Gaussian Splatting vs Photogrammetry vs LiDAR

• Export formats

• Pricing: free and Pro plans