Set scale from one known dimension, trace the perimeter, and get an accurate square footage check — without CAD, without printing, and without a site visit.
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When to use it
Builder says the unit is 1,850 sqft. Upload the floor plan, trace it, set scale from any labeled dimension. Know in minutes whether the number is right.
Before you rely on a plan for pricing, permitting, or purchasing decisions — verify the square footage yourself. Takes 2 minutes and you know the number is yours.
Buyer and seller disagree on size. MLS says one thing, the plan says another. Upload the plan, measure it yourself, have a defensible number backed by the actual drawing.
Before you commit to a property, run the floor plan yourself. Takes 2 minutes and catches discrepancies between listed and actual square footage before money changes hands.
CubiCasa, Matterport, and iGUIDE produce accurate to-scale plans but intentionally omit square footage. Upload the export, trace the exterior, and get the number the scan left out.
Main house is clear but the garage, ADU, or addition is undocumented. Add a separate polygon and get that area measured from the same plan — no separate tool needed.
How it works
Drop in an architectural PDF, builder drawing, scan-to-plan export, or a photo of a printed plan. Any to-scale image works — no special file format required.
Click two points on any labeled wall or dimension and enter the real-world measurement. PlanSnapper calibrates every other measurement in the drawing from that one reference.
Click around the perimeter to trace the space you want to measure. Square footage appears instantly. Add a second polygon for detached structures or separate areas.
Works with floor plans and blueprints from
Want to try before you buy? Get started for $9 — instant access.
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Billed $288/yr · 2 months free
Runs entirely in your browser · ANSI compliant · Instant access after checkout
No setup or downloads required.
FAQ
Upload the plan, set scale, trace once. Verified square footage in under 2 minutes.
48-hour money-back guarantee · Instant access · Pro subscription cancels anytime