How does the bathroom accessibility calculator work?

You enter the room length and width, the clear door opening, and tick the barrier-free features you need, such as a wheelchair turning circle, clear floor space at the WC, side transfer space, grab-bar zones and a roll-in shower. The tool compares your dimensions against indicative NBC 2016 and CPWD Harmonised Guideline targets, then returns a 0-100 accessibility score with the specific clearances that pass or fail and suggested fixes.

What are the key wheelchair clearances I should aim for?

As indicative planning targets, aim for a clear door opening of about 900 mm, a 1500 mm turning circle for a wheelchair to rotate, roughly 1200 mm of clear space in front of the WC, and around 1600 mm of room width for a side transfer beside the pan. A curbless roll-in shower needs extra length. Treat these as simplified minimums, not exact legal figures.

How accurate is the score and what should I verify?

The score is indicative and meant for early planning and awareness, not for sign-off. Real accessibility depends on fixture placement, grab-bar mounting, floor slope, drainage and door swing, which a plan-level check cannot fully capture. Before building or claiming a barrier-free bathroom, confirm every clearance against the current NBC 2016 Part 9 and CPWD Harmonised Guidelines with a licensed architect or accessibility consultant.

Accessibility Check

Bathroom Accessibility Calculator

Enter your bathroom size, door width and the clearances you need. Get a 0–100 accessibility score, a pass/fail per requirement and suggested fixes, checked against indicative NBC 2016 / CPWD barrier-free targets. Indicative only — confirm with the current codes and an accessibility professional.

Your bathroom & needs

Room length (mm)

Room width (mm)

Door clear opening (mm)

Requirements to check

Room is 2,134 × 1,524 mm (3.3 sq m). Checks compare your room and door against simplified barrier-free minimums — a real design also depends on fixture positions, approach direction and wall strength for grab bars.

Accessibility score

0/100

Partially accessible

3 of 5 checks pass · 2 to fix

Door clear width750/900mm
Wheelchair turning circle1,524/1,500mm
Clear floor space at WC2,134/1,900mm
Side transfer at WC1,524/1,600mm
Grab-bar wall zone1,524/1,400mm

Required vs available for key clearances (mm). Indicative — confirm against current codes.

Suggested fixes

Widen the door to ≥900mm clear opening — a 1000mm frame, an outward-swing or a sliding/pocket door all help.
Leave ≥900mm clear beside the WC (pan centreline ~450–500mm off the wall) for a lateral wheelchair transfer.

Plan a compliant layout

Get a barrier-free fixture layout and retrofit priorities from DesignAI.

Key barrier-free numbers (indicative)

Door clear width

≥ 900 mm

1000mm frame is safest

Turning circle

1500 mm ⌀

wheelchair 360° turn

WC seat height

450–480 mm

vs ~400mm standard

WC centreline

450–500 mm

from side wall

Horizontal grab bar

750–850 mm

above finished floor

Roll-in shower

900×1500 mm

curbless, linear drain

Basin rim height

≤ 800 mm

knee clearance under

Clear floor at WC

900×1200 mm

front approach

Go deeper

Bathroom size calculator Home accessibility planner Bathroom cost calculator

This tool gives an indicative accessibility check using simplified minimums drawn from NBC 2016 and the CPWD Harmonised Guidelines & Standards for Universal Accessibility. It is not a compliance certificate. Real barrier-free design depends on fixture layout, approach direction, floor slope, wall strength for grab bars and local building approvals — always verify against the current codes and a qualified accessibility professional or architect before building.

Frequently asked questions

How does the bathroom accessibility calculator work?: You enter the room length and width, the clear door opening, and tick the barrier-free features you need, such as a wheelchair turning circle, clear floor space at the WC, side transfer space, grab-bar zones and a roll-in shower. The tool compares your dimensions against indicative NBC 2016 and CPWD Harmonised Guideline targets, then returns a 0-100 accessibility score with the specific clearances that pass or fail and suggested fixes.
What are the key wheelchair clearances I should aim for?: As indicative planning targets, aim for a clear door opening of about 900 mm, a 1500 mm turning circle for a wheelchair to rotate, roughly 1200 mm of clear space in front of the WC, and around 1600 mm of room width for a side transfer beside the pan. A curbless roll-in shower needs extra length. Treat these as simplified minimums, not exact legal figures.
How accurate is the score and what should I verify?: The score is indicative and meant for early planning and awareness, not for sign-off. Real accessibility depends on fixture placement, grab-bar mounting, floor slope, drainage and door swing, which a plan-level check cannot fully capture. Before building or claiming a barrier-free bathroom, confirm every clearance against the current NBC 2016 Part 9 and CPWD Harmonised Guidelines with a licensed architect or accessibility consultant.

Related Guides — Deep-dive reading

Accessible Bathroom Standards India: CPWD Harmonised Guidelines & NBC 2016 (2026)

The regulatory reference for barrier-free bathrooms in India — the CPWD Harmonised Guidelines and Standards for Universal Accessibility, NBC 2016 Part 3, the RPwD Act 2016 mandate, and the working dimensions for turning circles, grab bars, WC height, roll-in showers and door widths.

Bathrooms

Designing Adaptable & Universal-Design Homes

Accessibility, Aging-in-Place, and the Multi-Stage Family — Code, Anthropometrics, and Plan-Stage Discipline for Indian Residential Architects

Room Planning

Accessible Bathroom Design India: Universal, Barrier-Free & Wheelchair Layouts

A practical, code-referenced guide to designing an accessible bathroom in India — the 1500 mm turning circle, roll-in showers, WC transfer space, grab-bar blocking and flush thresholds — built on the CPWD Harmonised Guidelines and NBC 2016 Part 3.

Bathrooms

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