Upload a floor plan photo, click one wall you know the length of, and get accurate square footage plus every wall measurement. No apps, no uploading to a server. Everything runs in your browser.
No account required. Cancel anytime. Runs 100% in your browser.
Works on any to-scale floor plan, including CubiCasa, Matterport, and hand-drafted plans.
Drag and drop any floor plan image. SqftSnap auto-detects the exterior perimeter using computer vision, or trace it manually in seconds.
Click the two endpoints of any wall you know the length of. Even a single room dimension from the floor plan is enough. SqftSnap sets the scale automatically.
Hit Calculate. Get total square footage, individual wall lengths, and perimeter, all in feet and inches. Add a separate polygon for garages or outbuildings.
Floor plan companies like CubiCasa and Matterport produce accurate, to-scale plans but omit square footage, likely for liability reasons. SqftSnap fills that gap.
Verify or calculate GLA when the listing doesn't include it. Used by a San Francisco Bay Area appraiser on every single appraisal.
Confirm square footage before listing. Catch discrepancies before they become deal-breakers or liability issues.
Independently verify the square footage on any listing before making an offer. On a $1M+ transaction, accuracy matters.
Pay once for a day pass or subscribe monthly. No free tier. Just a real tool.
Very accurate on professionally-produced, to-scale floor plans (CubiCasa, Matterport, architect drawings). Accuracy depends entirely on the quality and scale of the underlying plan. If the plan is accurate, SqftSnap is accurate.
Any to-scale floor plan where at least one wall measurement is known or visible. CubiCasa and Matterport floor plans (common in SF Bay Area listings) work excellently. Hand-sketched plans or non-to-scale images won't give reliable results.
No. Everything runs entirely in your browser using WebAssembly (OpenCV.js). Your floor plan image never leaves your device. No data is sent to any server.
Use the manual trace tool: click along the exterior walls to place points, then close the polygon. The gap-size slider helps with floor plans where doorways cause leaks in the auto-detection.
Yes. Use "Add Separate Polygon" to add a garage or any other area. Results show living area and garage totals separately.
Email hello@sqftsnap.com and we'll cancel immediately. No questions asked.