Vanity size is one of those decisions that looks simple on paper and turns complicated fast once you're standing in a half-renovated bathroom with a tape measure in your hand.

Too small, and you lose storage and bench space you'll miss every single day. Too large, and the bathroom feels cramped, doors won't open properly, and the whole renovation feels like a planning mistake. Get it right, and the vanity fits the room so naturally that nobody notices - it just works.

This guide covers every standard vanity size available in Australia in 2026 from a compact 450mm powder room unit to a full 1800mm double-sink master bathroom vanity and matches each size to the bathroom type, storage needs, plumbing configuration, and vanity basin style it suits best.

What Size Vanity Do I Need? The Quick Answer

Vanity sizes in Australia are measured by cabinet width. The most common sizes are 450mm (powder room), 600mm (single ensuite), 750mm–900mm (main bathroom, one person), 1200mm (main bathroom, two people), 1500mm (larger bathroom or double basin), and 1800mm (master bathroom or double basin). The right size depends on your available wall space, plumbing rough-in position, number of users, and storage requirements.

Here's the full size reference before we go deeper:

Step 1: Measure Your Available Wall Space - Properly

Before you look at a single product, measure the wall space where your vanity will sit. And measure it carefully, because vanity sizing mistakes are expensive to fix once the plumber and tiler have been through.

What to measure:

• Clear wall width - the usable wall space between any obstruction (door frame, toilet, shower screen, window reveal). Leave at least 50mm clearance on each side of the vanity for a comfortable visual margin, and enough room for doors and drawers to open without hitting adjacent fixtures.
• Depth clearance - standard vanity depth is 460mm–500mm. Make sure there's nothing protruding from the opposite wall or floor that would prevent the full depth being used.
• Plumbing rough-in position - your existing waste pipe and supply pipes are in a fixed position in the floor or wall. Your vanity's basin position needs to align with the waste outlet. If you're keeping existing plumbing, this can limit your width and basin position options. If you're doing a full renovation, discuss the rough-in position with your plumber before selecting the vanity.

Once you have your maximum available width, subtract at least 50–100mm for clearance margins. That gives you your target vanity width.

Step 2: Match Vanity Size to Bathroom Type

450mm Vanity - The Compact Powder Room Solution

A 450mm vanity is the minimum practical size for a functional single basin setup. It suits powder rooms (toilet and basin only, no shower) and very compact ensuites where wall space is genuinely limited. Storage is minimal - typically one small drawer and a shallow cabinet beneath.

A 450mm vanity is purpose-built for tight spaces. It gives you a vanity basin and enough bench surface to set a soap dispenser and hand towel and not much more. For a guest powder room that sees occasional use, that's perfectly adequate. For a bathroom used daily by one person, it will feel limiting within a few weeks.

Shop 450mm wall hung vanities and 450mm freestanding vanities at Clifton Bathrooms.

600mm Vanity - The Single Ensuite Standard

A 600mm vanity is the most commonly specified size for a single-person ensuite in Australia. It's the sweet spot between compact and functional - wide enough for a full-size basin with comfortable elbow room, deep enough for two or three drawers of meaningful storage, and narrow enough to suit the smaller footprints typical of ensuite bathrooms in apartments and newer homes.

If you're renovating a one-person ensuite or a bathroom used primarily by one adult, a 600mm vanity is almost certainly the right call. Pair it with a mirrored bath vanity (shaving cabinet) above for additional storage if the space allows.

Shop 600mm wall hung vanities and 600mm freestanding vanities at Clifton Bathrooms.

750mm Vanity - The Flexible Middle Ground

A 750mm vanity adds meaningful bench space over a 600mm unit enough for a soap dispenser, tumbler holder, and a small plant or candle without it feeling cluttered. Storage increases proportionally, making it a comfortable choice for one person who wants more bench space, or two people who share a compact bathroom and can manage with a single basin.

In bathrooms where the wall space doesn't quite stretch to 900mm, a 750mm unit is the practical compromise that doesn't sacrifice usability.

Shop 750mm wall hung vanities and 750mm freestanding vanities at Clifton Bathrooms.

900mm Vanity The Family Bathroom Workhorse

A 900mm vanity is the most versatile vanity size for an Australian main bathroom. It comfortably suits two adults sharing a bathroom, provides generous storage and bench space, and is wide enough to accommodate a deeper or wider basin without feeling cramped. It is available in both freestanding and wall hung configurations.

The 900mm vanity is where the sweet spot between size and practicality sits for most Australian families. It's the go-to recommendation for a main bathroom shared by two adults — wide enough to have real storage, with a basin that doesn't dominate the bench, and enough counter space on either side of the basin to be genuinely usable.

Both freestanding bathroom vanity and wall hung bathroom vanity options are well-represented at this width, giving you flexibility to choose based on your bathroom style and structural setup.

Shop 900mm wall hung vanities and 900mm freestanding vanities at Clifton Bathrooms.

1200mm Vanity - The Double-User Upgrade

At 1200mm, the vanity starts to feel genuinely generous. This width works particularly well in a family bathroom shared by multiple people there's enough bench space for two people to use the basin area simultaneously, and the storage capacity (typically three to four large drawers plus internal shelving) can handle a full household's bathroom essentials.

A 1200mm freestanding bathroom vanity with a single offset basin gives you a large bench run on one side practical for families with young children who need space for products and towels during the morning routine. A 1200mm wall hung vanity at the same width creates a lighter, more open feel that suits larger bathrooms without making the space feel overwhelmed.

Some 1200mm vanities can also be configured with a double basin - two smaller basins side by side. This suits couples who prefer separate basins for the morning routine without moving to a 1500mm or 1800mm unit.

Shop 1200mm wall hung vanities and 1200mm freestanding vanities at Clifton Bathrooms.

1500mm and 1800mm Vanities - The Master Bathroom Statement

At 1500mm and above, you're firmly in master bathroom territory. These widths almost always feature a double basin configuration two separate basins, side by side, each with their own mixer and provide maximum storage and bench space for two adults with distinct morning routines.

A freestanding vanity at 1500mm or 1800mm is a significant piece of furniture in a bathroom it anchors the room, creates a hotel-suite quality feel, and provides enough storage that you'll never need a separate linen cupboard for bathroom essentials.

A wall hung bathroom vanity at these widths creates a dramatic floating effect in a large bathroom  the exposed floor beneath a 1800mm floating vanity is a genuinely striking design feature.

The Fienza Bondi Natural Oak 1200mm Curve Vanity is one of our most popular products at Clifton Bathrooms in this style category a beautifully crafted unit that scales well and photographs exceptionally in a master bathroom context.

Shop 1500mm wall hung vanities | 1500mm freestanding vanities | 1800mm wall hung vanities | 1800mm freestanding vanities at Clifton Bathrooms and Kitchens.

Step 3: Choose Your Vanity Basin Style

Once your vanity size is set, the vanity basin style has the next biggest impact on how the finished bathroom looks and functions.

For most bathroom vanity basins in a main or master bathroom, an inset or under counter basin gives the cleanest result the benchtop surface is maximised, wiping down is easy, and the whole vanity reads as one continuous piece rather than a basin sitting on top of something else.

Browse the full bathroom vanity basins and vanity range at Clifton Bathrooms: Vanities and Mirrors Collection | Above Counter Basins | Inset Basins | Under Counter Basins

Step 4: Don't Forget the Mirror

The bathroom mirror should be chosen alongside the vanity not as an afterthought. As a general rule, your mirror width should equal the vanity width (or sit within 50mm either side). A mirror that's too narrow above a wide vanity looks orphaned. A mirror that's wider than the vanity can work in some designs but needs to be intentional.

A mirrored bath vanity (shaving cabinet) adds practical storage above the vanity particularly useful for 600mm and 750mm vanities where the cabinet storage is more limited. For 1200mm and wider vanities, a wide frameless mirror or a pair of side-by-side mirrors often works better aesthetically.

In 2026, LED backlit mirrors with demister pads have become the standard choice for Australian master bathrooms and ensuites they add a premium touch without the cost of a major renovation element.

Browse the bathroom mirrors collection at Clifton Bathrooms - across standard frameless mirrors, shaving cabinets, and LED backlit options.

Step 5: Complete the Look with Bathroom Accessories

A perfectly sized vanity with a poorly chosen accessory set still won't look finished. Your towel rail, robe hooks, soap holder, and toilet roll holder should be chosen in the same finish as your basin mixer and ideally from the same brand range to ensure colour-match accuracy across the finish.

Nero Tapware and Oliveri both offer complete bathroom accessories collections from towel rails and robe hooks through to soap holders and shelving that coordinate exactly with their respective tapware ranges. Buying the full set from one brand eliminates the risk of subtle finish mismatches that are invisible in product photos but obvious on the wall.

Browse the full bathroom accessories range at Clifton Bathrooms and Kitchens.

Find Your Perfect Vanity Size at Clifton Bathrooms And Kitchens

At Clifton Bathrooms and Kitchens, we stock wall hung vanities and freestanding bathroom vanity in every size from 450mm to 1800mm - in a full range of finishes, basin configurations, and styles from trusted brands including Fienza and ADP. Whether you need a compact 600mm ensuite unit or a full 1800mm double-basin master vanity, our range has the right fit.

Frequently Asked Questions

What size vanity do I need for a small bathroom? 

For a small bathroom under 4 square metres, a 600mm or 750mm vanity is typically the right fit. A wall hung vanity at this size makes the floor feel larger and the room less cramped. For a powder room (basin and toilet only), a 450mm vanity is sufficient.

What is the difference between a wall hung vanity and a freestanding vanity? 

A wall hung bathroom vanity mounts to the wall with the cabinet floating above the floor. A freestanding vanity sits on the floor with a full floor-to-benchtop cabinet. Wall hung vanities make small bathrooms feel more spacious and are easier to clean under. Freestanding vanities offer more storage and suit larger bathrooms.

What size mirror should I get for my vanity? 

As a general rule, your bathroom mirror should be the same width as your vanity, or within 50mm either side. A mirror that's significantly narrower than the vanity looks unbalanced. For vanities 1200mm and wider, two side-by-side mirrors or a wide single mirror both work well.

How much clearance do I need around a bathroom vanity? 

Leave at least 50mm between the vanity edge and the nearest wall or obstruction for a comfortable visual margin. Allow enough space for drawers and doors to open fully - typically 400mm–500mm clearance in front of the vanity for drawers. For vanities adjacent to a toilet, a minimum 200mm side clearance from the vanity edge to the toilet centre line is recommended.

What is a mirrored bath vanity? 

A mirrored bath vanity (also called a shaving cabinet) is a wall-mounted cabinet with a mirrored door that provides both a bathroom mirror and hidden storage behind it. It suits vanities where overhead storage is limited - typically 450mm to 900mm wide vanities. Browse the bathroom mirrors range at Clifton Bathrooms for available options.