Bathroom Vanity Dimensions: Standard Height, Depth, Width & Clearance

A standard bathroom vanity stands 32–36 in tall, sits 21 in deep, and runs from 24 in wide (a tight single) up to 60–72 in (a double), and you want at least 30 in of clear floor directly in front of it. Those numbers cover almost every stock cabinet on the shelf at a big-box store, so unless your plumbing or walls are unusual, you rarely need anything custom.

Aggregate vanity sizes at a glance

Stock vanities come in a predictable ladder of widths. Height and depth barely budge — it’s the width and the sink count that change with your room. Here’s every common size in one place, with the clearances that keep a door swinging and a faucet from spitting onto the side wall.

What to Look For When Buying a Bathroom Vanity

Width fits the wall; these choices decide storage, comfort, and whether the top is included.

• Single vs double — a double needs at least 60 in of wall; below that, one sink with more counter wins
• Top included or separate — many vanities sell as a base only, so confirm whether the top and sink are included
• Height — a 36 in comfort-height vanity suits adults; keep 32 in for a kids bath
• Storage type — drawers beat doors for daily items; a floating vanity frees floor space
• Faucet holes — match the pre-drilled holes to a single-hole or widespread faucet

Prices are typical US ranges and vary by brand, size, and features — ballparks, not quotes.

How to pick a width that actually fits

Measure the wall the vanity will sit on, then subtract for anything the cabinet has to clear — a door casing, a baseboard heater, the swing of the bathroom door itself. A 36 in vanity crammed into a 38 in gap looks jammed and makes the trim work miserable, so buy to the width that leaves breathing room rather than the one that technically wedges in.

Before you settle on a number, walk this quick checklist:

• Wall length — the raw span the cabinet sits in, corner to corner.
• Door swing — where the room door lands when open, and whether it clips the vanity or a drawer front.
• Wall obstructions — baseboard, trim, a radiator, a light switch, or a supply valve.
• Toilet centerline — the vanity’s side edge needs to stay at least 15 in off it.

The single-versus-double decision is really a width decision. Two people brushing at once need a 60 in cabinet at minimum — anything narrower and the faucets crowd each other. If your wall is 48–56 in, you’re better off with one big sink and more counter than two sinks fighting for space. This is the same clearance logic that governs a walk-around aisle, which we cover in the kitchen island size and clearance guide; give people room to stand, and the layout works.

Standard height: the 32 in original vs the 36 in comfort height

For decades the default was 30–32 in, a height borrowed from old furniture-style washstands. It’s low — fine for a powder room and genuinely better if kids use the sink. Newer builds default to 36 in, the same as a kitchen counter, so a tall adult isn’t hunched over the basin.

Remember the countertop and the sink itself add height on top of the cabinet number, so a 36 in cabinet fitted with a raised vessel bowl can push the rim near 40 in — too high for daily use. Pick height by who uses the room, not by trend: 36 in for adults, 32 in for kids and powder rooms.

Wall-hung (floating) vanities throw the standard out on purpose. The cabinet bolts to the studs at whatever height you set, so you can dial the rim to the main user and open a sightline of floor underneath that makes a small bath read bigger. Set the finished counter around 34–36 in for adults, lower it for a kids’ bath, and make sure the wall has solid blocking behind the drywall before you hang any weight on it.

The dialing-in exercise mirrors how our standing desk height calculator matches a work surface to your elbow — measure the person, then set the surface. If your bath sits next to the kitchen and you want the counters to read as one line, our kitchen counter height and depth guide explains the 36 in standard those cabinets share (they’re separate rooms, but the eye notices a mismatch).

Depth and the 21 in rule — and when to go slim

A standard vanity cabinet is 21 in deep, and the countertop overhangs to roughly 22–22.5 in at the front edge. That depth swallows a drop-in sink and still leaves a strip of counter for a soap pump and a toothbrush cup. It’s the number to plan around in any normal full bath.

Tight rooms are where you cheat. Shallow vanities come in 18 in and even 15 in depths for powder rooms, narrow hallways, and behind a door that swings inward. Below about 18 in you lose a real drawer — you’re down to a door and a shallow shelf. A vessel or trough sink changes the math too, since the bowl sits on top instead of dropping into the counter.

Treat depth like an appliance rough-in: know the real footprint before you commit, the same way you would when checking a washer and dryer’s dimensions against a laundry closet or slotting a unit into a dishwasher cutout. An inch of overhang you forgot is an inch a door won’t clear.

The clearance mistake that ruins a good layout

Here’s the one people skip: the clear floor in front of the vanity. Building code sets a bare minimum of 21 in of open space in front of a lavatory, but designers plan for 30 in so a person can stand, bend, and open a lower drawer without backing into the tub or catching the toilet.

The classic error is buying a vanity that fits the wall perfectly, then finding the door won’t swing past it or the bottom drawer slams into the toilet tank. Doors need arc room; drawers need pull-out room plus a body standing back far enough to reach in. Keep the vanity’s side edge at least 15 in from the toilet centerline, confirm the door or drawer clears at full extension, and check all of it before you buy, not after.

Lock four numbers before you order: 32–36 in height, 21 in depth, your chosen width, and 30 in of clear floor in front.

Plan the whole room, not just the cabinet, and the vanity almost picks itself. If you’re mapping out several spaces at once, the same measure-first habit runs through our home office setup guide, and you can browse every room walkthrough from the Roomly homepage. Get the four numbers right — height, width, depth, and that 30 in in front — and the install is boring in the best way.