How to Create a Floor Plan with Your iPhone

You can create an accurate, to-scale floor plan by simply walking through a room with a recent iPhone or iPad Pro — no tripod, no laser measure, no second visit. Modern iPhones include a LiDAR scanner that records the geometry of a space as you move through it, and software turns that capture into both a 2D floor plan and a 3D model. Here's how it works, how accurate it is, and how to get a clean plan you can actually publish.

What you need

• An iPhone Pro / Pro Max or iPad Pro with a LiDAR sensor (iPhone 12 Pro and later).
• A floor-plan capture app that uses Apple’s RoomPlan and LiDAR.
• A few minutes per room — most rooms take under five minutes to walk.

Step by step: capturing a room

• Open the capture app and start a new scan in the room you want to measure.
• Slowly walk the perimeter, keeping the walls, floor and doorways in view of the camera.
• Cover the whole space — corners, openings and any alcoves — so the geometry is complete.
• Finish the scan. The capture is uploaded and processed into a model and plan automatically.
• Within minutes you get a 3D model and a clean, to-scale 2D floor plan you can measure and export.

The key is steady, complete coverage rather than speed. LiDAR builds the model from what it sees, so walking the full perimeter and catching every corner gives you a tight, accurate plan.

How accurate is an iPhone floor plan?

iPhone LiDAR captures are typically accurate to within a couple of centimetres — easily good enough for real-estate floor areas, as-built drawings, space planning and maintenance. Accuracy does depend on capture quality and room conditions, which is why it matters to use software that characterises how accurate each scan really is, rather than handing you a number and hoping you trust it. The best tools measure the bias and noise of a scan against known references, so the floor area you publish is one you can stand behind.

iPhone vs a tape measure or laser

A tape measure or laser distance meter gives you one dimension at a time, by hand, on site — and you have to be there again if you missed something. An iPhone LiDAR scan captures the entire room geometry at once, so you can pull any measurement or floor area later, from the model, long after you’ve left the building. For anyone documenting many spaces — estate agents, facility managers, surveyors — that difference compounds quickly.

Turning the scan into a usable floor plan

FIMIT is built for exactly this: walk a space with an iPhone and get an accurate 3D model and a precise, to-scale 2D floor plan in minutes. Every scan produces a 2D plan alongside the 3D model — ready to publish on a property listing, hand to a contractor, or keep as an always-current record of a building. It’s EU-hosted and GDPR-ready, with every scan, model and plan organised by building, project and room for your whole team.