Bathroom planner: fit the bath, shower, toilet and basin

Bathrooms are small and full of fixed things that need pipes, so a few centimetres decide whether a layout works.

Clear space in front of each fixture

These are common guidelines; building rules and accessibility standards differ between countries.

Toilet: about 60 cm clear in front, and about 20 cm from its centre to a side wall or more.
Washbasin: about 60–70 cm in front.
Shower: an opening of at least 60–70 cm to step in.

The door and the pipes

Check that the door can open fully without hitting the toilet or basin; Roomdraft marks a blocked door swing. If space is tight, an outward-opening or sliding door helps.

Keeping the toilet close to where the soil pipe leaves the room saves cost; ask a plumber before moving it far.

Templates to start from

Family bathroom

1 room · 6.2 m²

One-bedroom apartment

3 rooms · 53.7 m²

Studio apartment

2 rooms · 30.0 m²

Guides

Space needed around furniture — Clearances that make a room comfortable — walkways, space beside beds, in front of wardrobes, around dining tables and in kitchens and bathrooms.
Standard door and window sizes — Typical widths and heights of internal doors, front doors, garage doors and windows, with the differences between countries you should know before you plan.
How to measure a room for a floor plan — What to measure, in what order and with which tools, so your floor plan matches the real room — including walls, doors, windows, radiators and ceiling height.

Questions

What is the smallest practical bathroom?

A shower, toilet and small basin can fit in roughly 1.5 × 2 m, depending on the shower size and door. A bathtub needs at least 170 cm of wall.

Can I plan a wet room?

Yes, place a shower tray symbol and keep the floor clear; the plan does not model floor slopes or drainage.