How does the bathroom vanity size calculator work?

It takes your available wall run and leaves a small gap of about 50mm on each side to give the recommended vanity width. It then sets the counter depth between roughly 450 and 600mm based on your basin type, and drops the slab so the basin rim lands at a comfortable use height. Finally it checks how many basins fit and adds up an indicative counter, cabinet and basin cost.

What wall run do I need for a single or double vanity?

As a practical guide each basin wants about 600mm of its own width plus elbow room, so a single vanity is comfortable from roughly 600 to 900mm and a double basin typically needs about 1200mm or more of usable run. Below that a second basin gets cramped. Enter your real wall run and front room depth in millimetres and the tool tells you how many basins realistically fit.

What counter height should a bathroom vanity be?

A common washbasin rim height in India sits around 800 to 850mm, with a comfort range of about 850 to 900mm that is easier on the back for taller users. A countertop vessel basin sits above the slab, so the calculator lowers the finished counter to keep the rim at your target. These are indicative figures for planning, so confirm the final height with your plumber and chosen basin before fixing.

Vanity Size Calculator

Bathroom Vanity Size Calculator

Enter your available wall run and get the right vanity width, counter depth and height, how many basins fit, a front-clearance check and an indicative ₹ cost by top material. Tuned for Indian bathrooms, 2026 — always confirm on site before ordering.

Your wall & basin

Available wall run (mm)

Room depth in front (mm)

Basins

Basin type

Counter height

Storage need

Counter top material

We leave a 50mm gap each side of the run, size the counter 520–600mm deep by basin type, and set the slab so the basin rim lands at a comfortable height. A double vanity needs about 1,200mm+ of width. Costs are fabricated-and-installed indicative rates — confirm locally.

Recommended vanity width

0 mm

fits 1 basin comfortably

Counter depth

520 mm

front to back

Counter height

820 mm

rim ~820mm

Front clearance

880 mm

comfortable (≥700)

Est. cost · quartz

₹45,164

top + cabinet + 1 basin

Indicative installed cost (top + cabinet + basin) by counter material. Selected material highlighted — confirm rates locally.

Plan & elevation

Plan the vanity & basin

Get basin, tap, top and storage ideas for this vanity from DesignAI.

Go deeper

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Dimensions and costs are indicative for Indian bathrooms in 2026 and round to sensible millimetres. Actual fit depends on plumbing rough-in position, door swing, wall squareness and your chosen basin — always confirm the vanity width, counter depth, tap-hole spacing and installed rate with your fabricator and plumber before ordering.

Frequently asked questions

How does the bathroom vanity size calculator work?: It takes your available wall run and leaves a small gap of about 50mm on each side to give the recommended vanity width. It then sets the counter depth between roughly 450 and 600mm based on your basin type, and drops the slab so the basin rim lands at a comfortable use height. Finally it checks how many basins fit and adds up an indicative counter, cabinet and basin cost.
What wall run do I need for a single or double vanity?: As a practical guide each basin wants about 600mm of its own width plus elbow room, so a single vanity is comfortable from roughly 600 to 900mm and a double basin typically needs about 1200mm or more of usable run. Below that a second basin gets cramped. Enter your real wall run and front room depth in millimetres and the tool tells you how many basins realistically fit.
What counter height should a bathroom vanity be?: A common washbasin rim height in India sits around 800 to 850mm, with a comfort range of about 850 to 900mm that is easier on the back for taller users. A countertop vessel basin sits above the slab, so the calculator lowers the finished counter to keep the rim at your target. These are indicative figures for planning, so confirm the final height with your plumber and chosen basin before fixing.

Related Guides — Deep-dive reading

Bathroom Wash Basin India: Types, Sizes, Height, Materials & Cost (2026)

The complete India-first guide to choosing a bathroom wash basin — wall-hung, countertop, under-counter, pedestal and semi-recessed mounting; ceramic, stone, solid-surface and glass materials under IS 2556; ergonomic heights, tap-hole options, waste and bottle-trap fittings, rupee costs and how to match a basin to your bathroom.

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Countertop Wash Basin India: Vessel & Table-Top Basins, Tap Height & Cost (2026)

How a countertop (vessel / table-top) basin actually sits on a vanity, why it raises your working height by 120–150 mm and forces a tall or wall-spout tap, the shapes and materials that survive Indian hard water, splashing and rim-cleaning realities, an honest pros-and-cons, and 2026 rupee costs.

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Bathroom Vanity India: Floor-Standing vs Wall-Hung Units, Materials & Cost

The complete India-first guide to bathroom vanity units — floor-standing versus wall-hung (floating), the carcass materials that actually survive Indian bathroom humidity, counter tops and basin fixing, sizes, heights and honest ₹ costs.

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