Square footage from a floor plan
Floor plan square footage calculator, room by room
- Area per room
- Total living area
- Garage/porch excluded
- ft-in or meters
- Free
In short
Draw the rooms (or generate or upload the plan) and get each room's area plus the total living area — garage and porch excluded, as listings count it. Type sizes in feet and inches or meters; switch units any time. Free, no sign-up, and the room schedule exports with the plan as PNG or PDF.
1660 sq ft living11 rooms49' 5" × 33' 8" footprint
How square footage is counted here
- Room area = width × length of each room rectangle.
- L-shaped rooms are two rectangles with the same name; both count.
- Living area = all rooms except garage and porch/patio/deck.
- Measured to the room lines (centers of walls) — close to how most quick listing plans measure; appraisers measure exterior faces, which adds a few percent.
Questions people ask
How do I calculate the square footage of an irregular room?
Split it into rectangles — draw two rooms with the same name. Their areas add up in the total.
Is it really free?
Yes. Generating plans from a description, editing, the 3D preview and PNG/PDF/SVG export are free with no account. AI conversion of sketches and photos is free 3 times a day; after that, packs start at $4.90 for 15 conversions.
Do I need to create an account?
No. Your plan autosaves in your browser. Use “Share link” to open it on another device or send it to someone.