Simple Plan Space

What it does

Free, open-source floor plan designer that runs in your browser. No downloads, no forced signups. Draw rooms with drag-and-drop, place doors, windows, and columns, manage multiple floors, and set real wall thickness. Includes area tracking with coverage breakdown, staircase calculator, undo/redo, metric/imperial units, and PDF export. Works fully on mobile. Everything auto-saves to your browser — optionally sign in to sync across devices. Built with React and SVG. Your plans, your way.

Design house floor plans for free in your browser. Drag and drop rooms, place doors and windows, manage multiple floors, export to PDF. No downloads, no signup required. Open source.

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