OpenPlan3D

OpenPlan3D is a free browser-based editor for drawing floor plans in 2D and viewing them in 3D. Draw walls, rooms, doors, and windows with measurements, grid snapping, and imperial or metric units, then furnish layouts with more than 140 models or imported GLB and glTF meshes. The editor can import Apple RoomPlan JSON scans and detect walls, doors, and windows. Plans can be exported as PNG, SVG, DXF, PDF, or JSON; the maker describes DXF exports for AutoCAD and other CAD software. OpenPlan3D Capture for iPhone and iPad uses Apple RoomPlan and requires an iPhone or iPad Pro with a LiDAR sensor. It saves PNG, SVG, DXF, PDF, and USDZ files directly to the device. The editor's plans are stored in the user's browser rather than on the maker's servers, according to the maker. OpenPlan3D is open source under the MIT License, with source code on GitHub. Its free plan includes all features, requires no account, and has no premium tier or paywalls.

OpenPlan3D pairs floor plan drawing with 3D viewing, imports, and several export formats. It may suit users who want a free browser editor, while Capture has a specific device requirement.

OpenPlan3D suits people planning remodeling, interiors, furniture layouts, rentals, or real estate listings, as well as CAD workflows. Its Capture app is an option for iPhone or iPad Pro users with LiDAR who want to use RoomPlan scans.

OpenPlan3D is a free browser editor for measured floor plans, 3D furnishing, scan import, and CAD-oriented exports. It fits people planning rooms, preparing property layouts, or moving a design into another tool. Its strongest case is an unusually complete no-paywall workflow; its main caveat is that room capture depends on a LiDAR-equipped iPhone or iPad Pro.

Overview

OpenPlan3D combines 2D drafting and 3D visualization in a browser editor, with no account required on its Free plan. Plans are stored in the browser rather than on OpenPlan3D’s servers, which suits users who want local handling of their work. The editor is open source under the MIT License, and the maker, theLodgeStudio, invites contributions, feedback, and feature requests through GitHub.

This is a practical option for real-estate listings, remodeling, interior design, furniture planning, rentals, and CAD workflows. It is less compelling if your priority is a non-Apple scanning workflow, because its Capture app relies on Apple RoomPlan hardware.

Key features

Measured 2D drafting

Walls, rooms, doors, and windows can be drawn with measurements, grid snapping, and either imperial or metric units. That combination is useful for layouts where dimensions must stay consistent, not just for a rough visual sketch. Multi-floor design is supported, making the editor more suitable for whole-home planning than a single-room diagrammer.

3D furnishing and model import

A 3D view lets you inspect the design spatially and furnish it with more than 140 models. Importing GLB and glTF meshes is the more important advantage for advanced users: you can bring in models beyond the built-in collection instead of being limited to preset furniture.

Room scans and file exchange

The editor imports Apple RoomPlan JSON scans and identifies walls, doors, and windows from those scans. OpenPlan3D Capture can create that source on an iPhone or iPad Pro with a LiDAR sensor, then save PNG, SVG, DXF, PDF, and USDZ files directly to the device. The browser editor exports PNG, SVG, DXF, PDF, and JSON. DXF gives AutoCAD and other CAD workflows a direct handoff, while SVG and PDF cover presentation and documentation needs.

Pricing

The Free plan costs nothing, includes all features, has no premium tier or paywalls, and requires no account. There is no free trial because the product itself is free. That removes seat fees, quotas, renewal dates, and upgrade decisions, making it a strong fit for occasional planners, independent designers, renters, and anyone testing a workflow before committing to paid software.

The trade-off is not a reduced feature tier but the device requirement for Capture: automated room scanning is practical only for users with a LiDAR-equipped iPhone or iPad Pro. Users without that hardware can still draw in the browser and work with supported imports and exports, but they cannot use that Apple-based capture route.

Platforms

OpenPlan3D is available on the web and iOS. The editor’s browser delivery keeps the main drawing workflow broad, while the iPhone and iPad Capture app is specifically tied to Apple devices with LiDAR sensors. That split is convenient for supported Apple users but creates a clear platform boundary for Android and non-LiDAR owners.

Who it's for

Choose OpenPlan3D for measured room layouts, multi-floor home planning, furniture placement, rental or property visuals, and projects that need PNG, SVG, DXF, PDF, JSON, or USDZ output. It is particularly well matched to users who value local browser storage, open-source code, and a free tool without account friction. Look elsewhere if your work requires a paid CAD suite’s broader professional scope or room capture on hardware outside Apple’s LiDAR ecosystem.

Pros and cons

• Pros: Every feature is included at no cost, so there is no paywall limiting exports or 3D work.
• Pros: Measurements, snapping, unit choices, and multi-floor support make it useful for serious layout planning.
• Pros: More than 140 furniture models plus GLB and glTF import cover both quick furnishing and custom-model workflows.
• Pros: DXF, SVG, PDF, PNG, JSON, and USDZ exports fit presentation, archival, and CAD handoff needs.
• Cons: Capture requires an iPhone or iPad Pro with LiDAR, excluding users on other phones and tablets from scan-based setup.
• Cons: Browser-local storage favors privacy but does not provide a server-based workspace for centralized plan access.

Alternatives

For broader drafting categories, browse 2D CAD Software, 3D Home Design Software, and Floor Plan Software.

• CMS IntelliCAD is the better direction when DWG, DXF, and DWF viewing across Android and Windows, or a paid CAD environment, matters more than a free browser editor.
• ProfiCAD suits readers who want a freemium diagramming option with a 30-day full-version trial and a free home license.
• RoomSketcher is worth choosing for a freemium room-planning service with Android, iOS, macOS, web, and Windows support, plus AI floor-plan conversion.
• Solid Edge is aimed at users seeking a broader engineering design and drafting package, including sheet metal, frame and weldments, surface modeling, and basic FEA.
• AutoCAD is the conventional choice when a paid, multi-platform professional CAD product is required.
• magicplan fits readers who want a freemium project-measurement workflow with flexible monthly commitments and unlimited users on its Pro Flex plan.
• GstarCAD is for buyers seeking a paid perpetual-license CAD product.
• NASJI offers a freemium alternative with both a one-payment Unlimited AI plan and a monthly Starter plan.

Verdict

OpenPlan3D is an excellent starting point for anyone who needs measured 2D plans, 3D furnishing, imports, and flexible exports without paying or creating an account. Choose it especially for local browser-based work and CAD handoffs. Look elsewhere when Apple LiDAR capture is essential but unavailable, or when you need a larger professional CAD platform rather than a focused open-source floor-plan editor.