Rust Base Planner: Build Your Base in 3D

Plan your next Rust base in 3D, right in your browser — no download, no account, and it works on mobile. The whole building catalog is here: foundations and triangles, walls, frames, floors, roofs, every staircase, and grades from twig to armored. Pieces snap to whatever you hover exactly like in Rust, stability is the game's own propagated-support model, and hold-to-sweep paints a whole row at once. Drop a tool cupboard, boxes, furnaces and turrets where you like — deployables follow your cursor instead of snapping. As you place pieces the panel totals your build cost, daily upkeep and the raid cost to break it — the same numbers as our base cost calculator.

When you're happy with it, hit Copy link and share the layout with your team — the link re-renders your base's cost summary on open, so anyone can price it even before the 3D view loads. Free, fast, and built for planning this wipe.

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Live cost

Place pieces to see build cost, upkeep and raid cost.

How to use the planner

  1. Pick a piece from the parts sidebar (on a phone, the category tabs docked under the canvas) — foundations and triangles, the wall family (walls, doorways, windows, frames), floors, roofs and ramps, every staircase (straight, L, U, spirals) — and a grade from twig to armored. Keys 1–8 pick the main tools, 9 and 0 grab Stairs and Ramp. Hover a placed piece and the corner panel names it, with its grade, cost and stability.
  2. Place by pointing, not by picking a level. Foundations drop wherever you point (Q/E rotates them) and snap onto a nearby base's edges, just like in Rust; everything else snaps to whatever you hover — the piece under your cursor glows white so you always see what you're building from. Point at a foundation edge for a wall, a wall top for the next storey's floor, then a wall top again for the storey above. Point Stairs at a foundation or floor to run a staircase up to the next level; Ramps and roofs turn themselves to sit on their support. Hold the button and sweep to paint a whole row in one go (a single Undo removes the whole row) — foundations are the exception: one per click, like Rust.
  3. Upgrade in place: grab the Upgrade tool, pick a grade and sweep it across your build — every piece under the cursor re-tiers to that grade (the blue ghost shows the swap), just like the wrench in Rust. Pointing a piece tool at something you've already built also swaps instead of adding — a wall for a doorway, a floor for a floor frame, a roof for a ramp.
  4. Fill the frames and drop your deployables: the Door tool places every insert — doors and double doors, garage doors, a cell gate, shopfronts, window bars, reinforced glass, shutters, embrasures, ladder hatches and floor grills. The Deployables group has the tool cupboard, boxes, furnaces, turrets, traps and barricades — they follow the cursor freely (no snapping, like Rust), and placing a tool cupboard turns the upkeep range into the exact per-day number.
  5. Fly the camera like in Rust: right-drag to look around, W/S to fly toward or away from what you're looking at, A/D to strafe, Space/C for up/down and Shift for speed. Double-click (or press Z) jumps to that point — handy on big bases. Hit 2D view for a top-down plan (WASD pans the map there); on mobile, drag to orbit and pinch to zoom. Want the whole screen? The ⛶ fullscreen button in the canvas corner turns the planner into a distraction-free app — Esc (or the same button) brings the page back.
  6. Rust rules are on by default, so pieces must be supported the way Rust requires — a red ghost won't place (click it for the reason). Turn Rust rules off to free-build anything, or toggle Stability to tint pieces green → yellow → red by how well they're propped up.
  7. Watch the cost update on every placement: the small totals strip in the canvas corner keeps build, upkeep and raid cost in view while you build, and the Live cost panel below breaks the same numbers down per resource.
  8. Your work saves automatically to this browser and comes back when you return. Hit Saves to name and keep several layouts, load an old one, or start over with New layout.
  9. Hit Copy link to share your exact layout; remove pieces with the Delete tool, or hover one and hold Delete — it lights up red to show what's targeted, and releasing the key removes it (or Undo). Clear base wipes the whole layout in one undoable step. Use View to x-ray upper storeys and build inside a roofed base.

FAQ

Is the Rust base planner free?

Yes — it's completely free, runs in your browser, and needs no download or account. Unlike desktop planners like FORTIFY, there's no paywall and nothing to install.

Does it work on mobile?

Yes — it's built for it. The canvas comes first and a compact tab dock sits at the bottom of the screen, under your thumb: pick a category (foundations, walls, floors, roofs, stairs, deployables, tools), swipe its parts row, and choose a grade — the ⋯ tab holds the view toggles and saves. Undo/Redo float on the canvas, and the ⛶ button goes fullscreen so the planner fills the phone like an app. Drag to orbit and pinch to zoom; with a tool selected, tap to preview a ghost and tap the ✓ to place it. Tap a placed piece with no tool selected to read its name, grade, cost and stability.

How do I build a second storey?

There's no level stepper to fiddle with — just point at the top of a wall and place a floor, then raise the next storey's walls off that floor's edges. The planner reads the height from the geometry you hover, so building up is the same as building out. Use the View control to x-ray higher storeys when you need to build inside a roofed base.

Why won't a piece place (why is the ghost red)?

Rust rules are on by default, so pieces need real support: walls want a foundation or floor edge, floors and roofs want a wall or an adjacent floor under them, and anything too unstable to stand in Rust is blocked. Like in Rust, a loose foundation can't squeeze right next to an existing base either — snap it on, or leave a clear gap. Click the red ghost to see the reason. Want to sketch freely? Toggle Rust rules off and place anything, anywhere.

What do the stability colours mean?

Turn on Stability and every piece recolours by its propagated support, strongest to weakest: navy and steel blue are rock-solid, green and yellow are fine, orange and red are getting weak, and near-black means it's below the point where it would collapse in Rust. Even with the view off, anything under 5% tints red. It's the same per-socket support model the game uses, so a long cantilever or a wobbly tower shows up before you build it.

How accurate are the build and raid costs?

They use the same 2026 RustLabs-sourced numbers as our base cost calculator and raid cost calculator. Rust rebalances building and raiding most wipes, so treat the totals as a close guide rather than gospel.

Can I build with triangle foundations?

Yes — triangle foundations, triangle floors and floor frames, triangle roofs and even the triangle spiral staircase are all in, snapping at any angle exactly like in Rust. The catalog covers every building block: half and low walls, wall frames, all five staircases, ramps, and every frame insert from garage doors to floor grills.

Is the tool cupboard in it?

Yes. The tool cupboard places freely on any floor — following your cursor, not snapping to a grid, just like in Rust — and once it's down the upkeep range collapses to the exact per-day cost using the game's real decay brackets. Toggle Privilege to see its 30 m building-privilege sphere. Boxes, furnaces, auto turrets, shotgun traps, flame turrets and barricades place the same way.

Can I use the planner fullscreen?

Yes — hit the ⛶ button in the canvas corner and the planner takes over the whole screen: parts sidebar, canvas and the live totals strip, nothing else. On desktop it uses your browser's real fullscreen (Esc exits); on phones it expands to fill the screen above the tab dock. Even without fullscreen, the planner runs edge-to-edge on wide monitors — the parts sidebar sits next to the canvas, so nothing scrolls away while you build.

Will I lose my base if I close the tab?

No — the planner autosaves your layout to your browser and brings it back the next time you open the tool. Use Saves to keep several named layouts, or Copy link to back one up or share it. It's all local to your device — no account needed.

How do I share my base?

Click Copy link. The whole layout is packed into the URL — anyone who opens it sees your base in 3D, and the page even shows the cost summary before the 3D view loads.

More Rust base tools

Prefer to price a base from a parts list instead of building it in 3D? Use the Rust base builder & cost calculator. Planning a raid — or defending against one? See the raid cost calculator. Or skip planning and copy a proven design from the gallery: browse solo, duo, trio, quad and clan bases, or check the wipe countdown before you build.