Is SaunaDesignPro really free?
Yes. You can plan as many saunas as you want with no account required to start. When you are ready to buy, the material list exports so you can price it, edit it, or hand it to a supplier.
Free 3D sauna planner
Put your feet in the heat
SaunaDesignPro is a free 3D sauna planner from Sauna Marketplace. Lay out the room, size the heater to your volume, check venting and bench heights, and leave with an editable material list and build drawings.
Open the 3D sauna designerCompare sauna heaters
SaunaDesignPro lets people building their own sauna design the whole room on screen before a board is cut. Start from a square, L-shape, triangle, or beveled footprint, set dimensions live, and place doors, windows, benches, ceilings, and flooring with guided controls. Move a wall and the framing, cladding, and bill of materials update instantly.
The planner focuses on the decisions that make or break a sauna: bench height against the ceiling, ventilation intake and exhaust, matching heater kW to your actual cubic footage with clearances, drainage and drying, and a correctly layered wall assembly. Everything stays tied to the same model, so nothing drifts out of sync as you change your mind.
When the plan is right, export a material list you can price, edit, or hand to a supplier, plus a build-ready submittal PDF for your contractor or electrician. It is free to use, with no account required to start.
Design your sauna in 3D
Build your sauna twice: once on screen, once for real. Start from a square, L-shape, triangle, or beveled footprint and set dimensions live, then place doors, windows, benches, ceilings, and flooring with guided controls.
Spin the model, walk through it, and sanity-check it before it becomes lumber. Because every element stays tied to the same design, moving a wall updates the framing, cladding, and material list instantly.
- Multiple doors and windows per wall
- Obstruction modeling for columns, soffits, and chases
- Live framing, cladding, and BOM that update as you edit
- A 2D floor plan with real dimensions
Size and place the heater
A heater that barely covers the room struggles forever. SaunaDesignPro matches heater kW to your actual cubic footage and flags the required clearances, so the room heats evenly where you actually sit.
The included fit checker sizes a heater from your room volume, and the plan captures placement, clearances, and sensor notes so nothing gets guessed on site.
- Heater sizing from room volume (kW to cubic feet)
- Placement and clearance checks
- A working intake and exhaust vent path for your heater type
- Bench seat, head, and foot heights checked against the ceiling
Generate a material list and submittal
You leave with a plan, not a vibe. Every tweak recalculates the bill of materials instantly. Order specialty items from Sauna Marketplace, or export the spec sheet and source lumber, insulation, and roofing locally — the tool is clear about which is which.
The submittal is a 14-page construction document package generated on demand: cover and table of contents, floor plan and openings, framing elevations, a framing cut list, wall assembly reference, structural materials with prices, roof framing specs, and installation notes.
- Editable bill of materials you can price or hand to a supplier
- 14-page submittal PDF for a contractor or inspector
- One-page electrician handoff with circuit, breaker, and placement notes
- Framing cut list and structural materials with prices
A wall assembly that lasts
Most first builds fail inside the wall, not at the bench: a vapor barrier on the wrong side, foam where it does not belong, or no air gap behind the boards. The planner builds every wall in the correct order.
Interior to exterior: cladding, a 1x furring air gap so boards dry from behind, an aluminum foil barrier on the hot side, studs with mineral wool, then sheathing, WRB, and rainscreen on outdoor builds.
- One vapor layer — foil on the hot side, never doubled
- Mineral wool in the bays, no unapproved foam
- Furring air gap so cladding dries from behind
Who it's for
SaunaDesignPro is built for people planning and building their own sauna in a basement, garage, shed conversion, or backyard cabin, as well as for builders, dealers, and designers. Start from a real, complete build template close to yours and adjust from there.
Most builders run their own framing, insulation, paneling, and benches, then bring in a licensed electrician for the 240V hookup. Commercial and trade projects are supported with per-line-item lead times, freight quotes, PO invoicing, and submittal-ready docs.
Frequently asked questions
How do I size and vent an electric sauna heater?
The planner matches heater kW to your room's cubic footage and flags the required clearances. It also shows an intake and exhaust vent path that works for your heater — fresh air in near the heater, stale air out down low under the benches — so the temperature stays even where you sit.
Can my garage or basement become a good sauna?
Often, yes. The planner checks what usually trips people up in those spaces — ceiling height, ventilation, a power run, and where the heater can safely go — and it will tell you honestly when a space is fighting you.
What can I export when the design is done?
A 3D model you can spin and walk through, a 2D floor plan with real dimensions, an editable bill of materials, and a 14-page build-ready submittal PDF with framing elevations, a cut list, and an electrician handoff sheet.