Square Meters Calculator From a Floor Plan Image

Upload your floor plan image, set the scale by clicking both ends of a known wall length, and start measuring: click two points for a distance, trace a room for its area, or auto-detect the outline for total square meters. Lengths appear on the plan as you draw, and you can add multiple areas for multi-story homes.

JPG, PNG, HEIC, or any image export of a PDF floor plan. As long as the floor plan is visible as an image, you can upload and trace it. PDFs are automatically rendered to an image on upload.

Real estate appraisers verifying GLA from scanned sketches, agents checking listing square meters before it goes live, property managers calculating usable area from as-built drawings, and homeowners measuring rooms for renovation planning. Trades use it too: landscapers, painters, flooring and coating contractors, and scaffolding companies quoting jobs from site plans and floor plans.

The tool is optimized for desktop and laptop use. Precise point placement works best with a mouse or trackpad. It will load on a tablet but touch-based tracing on small screens is less accurate. Best results on a desktop browser.

Accuracy depends on two things: the quality of your floor plan and how precisely you set the scale. For a to-scale drawing with printed dimensions, like an architect's PDF plan set or a CubiCasa, Matterport, or iGUIDE export, you can expect results within 1-2% of a field measurement. Hand-drawn or rough sketches will have more error.

No. You only need one known measurement. Any wall where you know the real-world length. Set that as your scale reference and the tool calculates all other dimensions from that single input.

The tool measures what is in the image. If the floor plan is not drawn to a consistent scale. For example a rough hand sketch where proportions are eyeballed. The result will reflect those proportions, not the actual structure. For best results, use a to-scale floor plan from a scanner, professional software, or an architect drawing.

The tool measures gross living area (GLA) by tracing the exterior perimeter of finished above-grade space, the same method used in residential appraisal. You control which areas to include, so below-grade space can be measured separately.

Yes. You can add multiple separate polygon areas. One for each floor. Each polygon is measured independently and all areas are summed in the total. Measure the main floor, upper floor, and garage separately to keep above-grade and below-grade area organized.

Yes. The tool is built specifically for real estate appraisers who need to verify or recalculate GLA from floor plan sketches or scans. It is faster than manually re-sketching and provides a reliable second check. The appraiser is responsible for confirming the input floor plan is accurate and to scale.

The demo on the homepage is free: try the real tool on a sample floor plan, no account required. Measuring your own plan is $9 (measure it and export it in every format), with no signup. The $15 Day Pass covers unlimited plans for 24 hours, and the $29 monthly Pro plan covers unlimited plans with saved projects and per-room quantities. Teams of up to 3 can share one $49 monthly bill. Subscriptions cancel anytime.

Yes. Every paid plan includes its exports: download the labeled PDF (traced plan, all wall dimensions, scale reference), the takeoff PDF, and the CSV. Plans are $9 each, covered by a $15 day pass (unlimited plans for 24 hours), or unlimited on the $29 monthly plan. To save projects across devices and resume later, subscribe to a monthly plan.