How does the bathroom size calculator decide if my fixtures fit?

You enter the room length and width and tick the fixtures you want — WC, wash basin, shower, bathtub, storage. Each fixture carries an indicative Indian footprint plus an activity clearance, the floor you stand on to use it. Because these clearances share a common circulation strip, the tool does not simply add them; it applies an overlap credit and adds floor for an inward-swinging door, then compares the total against your available area.

What room dimensions and door type should I enter?

Enter the finished internal length and width in feet or millimetres, not the wall centre-lines. A common Indian three-piece bathroom is about 5 by 7 ft, a powder room around 3 by 5 ft, and a full bath with a tub roughly 6 by 8 ft. Pick a sliding or outward door where floor is tight, since an inward-swing door eats about 6 sq ft of usable floor near the entry.

How accurate is the fit verdict?

Treat it as a first sanity check for planning, not a measured floor plan. Real layouts also depend on plumbing rough-in positions, window and door placement, wall thickness and how fixtures share circulation. The footprints and clearances are indicative typical values for India and can vary by fixture model. Always confirm dimensions on site and against NBC 2016 Part 9 or a professional before you finalise or order.

Bathroom Space Planner

Bathroom Size Calculator

Enter your room size and pick your fixtures. We check them against indian minimum footprints and activity clearances to tell you if they fit, how much floor you use vs have, and the minimum room size you really need. Indicative India 2026 — always confirm on site.

Your room & fixtures

Room length (ft)

Room width (ft)

Fixtures to include

WC / toilet700 × 600 mm + 600 frontWash basin600 × 500 mm + 600 frontShower area900 × 900 mm + entryBathtub1700 × 750 mm + accessStorage / vanity600 × 400 mm + access

Door type

Clearances share a common circulation strip, so we don't simply add them up. An inward door eats ~6 sq ft — a sliding or outward door frees it. Also mind the short wall: a bathtub needs a run of at least 5.6 ft, a shower ~3.5 ft.

Feasibility score

0 / 100

Comfortable

Needs 30.5 sq ft of the 35 sq ft available — 87% used.

Available floor

35 sq ft

7 × 5 ft

Required floor

30.5 sq ft

incl. 6 sq ft door

Suggested minimum

3.5 × 9 ft

~32 sq ft to just fit

Comfortable at

34 sq ft

+10% breathing room

Required area per fixture (amber) vs the floor you have (teal). If the teal bar clears the amber stack, it fits. Indicative — confirm on site.

Lay out these fixtures

Get an efficient plan and clearance tips for this room from DesignAI.

WC-only powder room

3 × 5 ft

~15 sq ft recommended minimum

3-piece (WC + basin + shower)

5 × 7 ft

~35 sq ft recommended minimum

4-piece (adds tub / vanity)

6 × 8 ft

~48 sq ft recommended minimum

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Fit verdicts use indicative Indian minimum fixture footprints and activity clearances — a real layout also depends on plumbing positions, window and door placement, wall thickness and how fixtures share circulation. Treat this as a first sanity check, not a substitute for a measured floor plan. Always confirm dimensions on site before you finalise or order.

Frequently asked questions

How does the bathroom size calculator decide if my fixtures fit?: You enter the room length and width and tick the fixtures you want — WC, wash basin, shower, bathtub, storage. Each fixture carries an indicative Indian footprint plus an activity clearance, the floor you stand on to use it. Because these clearances share a common circulation strip, the tool does not simply add them; it applies an overlap credit and adds floor for an inward-swinging door, then compares the total against your available area.
What room dimensions and door type should I enter?: Enter the finished internal length and width in feet or millimetres, not the wall centre-lines. A common Indian three-piece bathroom is about 5 by 7 ft, a powder room around 3 by 5 ft, and a full bath with a tub roughly 6 by 8 ft. Pick a sliding or outward door where floor is tight, since an inward-swing door eats about 6 sq ft of usable floor near the entry.
How accurate is the fit verdict?: Treat it as a first sanity check for planning, not a measured floor plan. Real layouts also depend on plumbing rough-in positions, window and door placement, wall thickness and how fixtures share circulation. The footprints and clearances are indicative typical values for India and can vary by fixture model. Always confirm dimensions on site and against NBC 2016 Part 9 or a professional before you finalise or order.

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