Bathroom planner online – free and in 3D
Last updated: 26 October 2026
You plan a bathroom online by drawing the room with its door, window and connections and then placing toilet, washbasin, shower or bath with enough free space in front of each. In RoomPlanning you then see the bathroom in 3D and at eye level, so you notice early if it gets tight anywhere. It works free in the browser, for a small shower room just as for a family bathroom.
How to plan your bathroom in RoomPlanning
- Measure the room. Draw the bathroom with its real measurements (Rooms and areas). Also measure the window sill, sloping ceilings, shafts and projections, because every centimetre counts in a bathroom.
- Place door and window. The opening direction matters: a door that swings inwards against the toilet costs a lot of space (Doors and windows). A sliding door can help.
- Fixed points first. The toilet needs a connection to the waste pipe, so it usually sits close to the soil stack. Plan from there. Draw a pre-wall for toilet and washbasin as a wall with its own, lower height (Drawing walls). Such pre-walls are often about 15 to 25 cm deep.
- Place the fixtures. In the catalog under Bathroom you’ll find a bathtub, square and rounded showers, floor-standing and wall-hung toilets, washbasins, vanity units and a mirror cabinet. A towel radiator and a washing machine are in the catalog too (Furnishing). Set width and depth on the right to the size you want, for example a 90 × 120 cm shower.
- Check clearances. Use the measuring tool (key M) to check the free space in front of each fixture, and the dimension tool (key D) to keep important measurements in the plan.
- Floor and lighting. Choose the floor covering with the Material and colour tool. Place lights and sockets by the mirror from the catalog and connect them in the electrical plan (Garden and electrical plan).
- View it in 3D. In the 3D view with cut or low walls you can look into the bathroom. At eye level you notice whether the mirror cabinet hangs too low or the shower feels cramped.
You’ll find finished bathrooms in the Four-room family apartment with a bathtub, for example, and in the Tiny house with a very compact shower room.
Rules of thumb for clearances and sizes
The following values are common rules of thumb for a comfortable bathroom, not a standard. The free spaces in front of different fixtures may overlap. More in Minimum room dimensions.
| What | Rule of thumb |
|---|---|
| Toilet and washbasin, side distance to wall or next fixture | at least about 20 cm, more comfortable 25 to 30 cm |
| Free space in front of toilet, washbasin, bath and shower | about 70 to 80 cm deep, more is better |
| Shower | from 80 × 80 cm, more comfortable 90 × 90 cm or larger |
| Bathtub | usually about 170 × 75 cm |
| Washbasin | height about 85 cm, width from 60 cm, double basin from about 120 cm |
Work out the amount of tiles and paint with the tiles and paint calculator.
Making the most of a small bathroom
- Shower instead of bath. A walk-in shower with a glass screen feels more open and takes less space than a bath.
- Wall-hung toilet. It is less deep than a floor-standing one and leaves the floor beneath it free.
- Door opening outwards, or a sliding door. That keeps the space behind the door usable.
- Storage on the wall. A mirror cabinet and shallow shelves instead of wide vanity units.
- Washing machine elsewhere. If there is room in the hallway or the basement, you gain a lot in the bathroom.
Planning for accessibility
If you plan ahead, you can follow an accessible-design standard such as Germany’s DIN 18040-2. Typical values from it: free spaces of 120 × 120 cm in front of toilet, washbasin and shower, a level-access shower of at least 120 × 120 cm, and a door with at least 80 cm clear width that opens outwards. Larger values apply for wheelchair users, such as 150 × 150 cm of free space. For binding plans, get advice, because the standard contains far more detail.
Common mistakes
- Forgetting the door swing. The door hits the toilet or the washbasin, or only opens halfway.
- No free space in front of the fixtures. Each piece fits on its own, but you can’t stand in front of the toilet.
- Ignoring the waste pipe. A toilet far from the soil stack is often impossible or costly.
- A shower door that collides with something. Check which way the shower door opens.
- Planning sockets, lighting and ventilation too late. You need light and power at the mirror, and a bathroom without a window needs ventilation.
- Planning a rented bathroom without asking. Agree larger alterations with your landlord first.
Frequently asked questions
Is the bathroom planner really free?
Yes. RoomPlanning is free, runs in the browser and needs no sign-up. Without an account your plan stays saved in that browser.
Shower or bath – which fits my bathroom?
Put both into the plan to try. A bath needs about 170 × 75 cm plus free space in front, a shower gets by with less. In 3D you see right away which option works better.
Can I plan an accessible bathroom?
You can plan and check the areas and dimensions for an accessible bathroom in RoomPlanning. It does not replace a check against the standard or professional advice, for example when applying for funding.
How do I show my plan to the tradesperson?
Export the plan as a scaled PDF or send a link (Drawings and export, Sharing and templates). The wall view under Drawings also shows each wall face on.
