Key takeaways
- Common vanity widths are 24, 30, 36, 48, 60 and 72 inches; double sinks usually start at 48 to 60 inches.
- Comfort-height vanities (about 34 to 36 inches) are taller than the older 30 to 32 inch standard.
- Plan about 30 inches of open floor in front of the vanity; many codes allow 21 inches as a minimum.
- Measure your drain and water lines, and match the faucet to the number and spacing of sink holes.
A new vanity can change the look of a bathroom, but the size and height have to fit the room and the people using it. This guide covers standard widths, single and double sinks, standard and comfort heights, depth and clearance, and what to check on your plumbing before you order.
Standard vanity widths
Vanities come in a few common widths, which makes it easier to replace an old one or plan a new bathroom. The most common sizes are 24, 30, 36, 48, 60 and 72 inches. Single-sink vanities usually run from 24 to 48 inches wide. Double-sink vanities start at around 48 inches and go up to 72 inches or more.
| Width | Sinks | Typical use |
|---|---|---|
| 24 in | Single | Powder rooms and small bathrooms |
| 30 in | Single | Small full bathrooms and guest baths |
| 36 in | Single | Standard bathrooms; more counter and storage |
| 48 in | Single or compact double | Larger bathrooms; generous counter space |
| 60 in | Single or double | Primary bathrooms and shared baths |
| 72 in | Double | Large primary bathrooms; two users at once |
Measure the wall from side to side, and note anything that limits width, such as the toilet, a tub edge, a shower door or a side wall. Remember that the countertop can extend up to about an inch past the cabinet on each side.
Single or double sink?
A double vanity lets two people get ready at the same time and gives each person their own storage. A single vanity of the same width gives you more counter space, and it needs only one drain and one set of water lines.
The National Kitchen & Bath Association (NKBA) recommends about 36 inches between the centers of two sinks. Many building codes accept 30 inches as a minimum. A 60-inch double vanity often gives about 30 inches between sink centers, while a 72-inch double gives more elbow room. If two people will use the sinks at the same time every morning, the wider size is usually worth it.
Switching from a single to a double sink usually means adding a second drain and new water lines. Plan for a plumber if your current bathroom only has one set of connections.
Vanity height: standard vs. comfort height
Height is measured from the floor to the top of the countertop. Older vanities are often around 30 to 32 inches high. Many newer vanities are comfort height, about 34 to 36 inches, which is close to kitchen counter height and means less bending for most adults.
- Standard height (about 30 to 32 in): good for children's bathrooms, shorter adults and some shared family bathrooms.
- Comfort height (about 34 to 36 in): popular in primary bathrooms and for taller adults.
- Accessible use: wheelchair users often need a lower counter, around 29 to 34 inches, with open knee space underneath.
NKBA planning guidelines suggest a sink height anywhere from 32 to 43 inches for adults, with the rim about 3 inches below the user's elbow. If you plan a vessel sink that sits on top of the counter, the bowl adds several inches of height, so a lower cabinet often works better.
Depth and clearance
Most vanities are about 21 inches deep, with the countertop adding a little more. If your bathroom is tight, narrow-depth vanities around 18 inches, and some as shallow as 16 inches, free up floor space. Measure depth from the wall to the edge of any baseboard trim.
Clearance keeps the bathroom easy to use. These are common NKBA recommendations alongside typical code minimums. Local codes vary, so check with your local building department for a remodel.
| Measurement | NKBA recommendation | Common code minimum |
|---|---|---|
| Open floor in front of the vanity | 30 in | 21 in |
| Sink center to a side wall | 20 in | 15 in |
| Between two sink centers | 36 in | 30 in |
| Toilet center to vanity side | 18 in | 15 in |
Also check the door swing and the space needed to open vanity doors and drawers fully. A drawer that hits the toilet or the door frame will be frustrating every day.
Plumbing rough-in and faucet holes
Before you choose a vanity, open the old cabinet and look at the plumbing. Measure:
- Drain height: from the floor to the center of the drain pipe coming out of the wall.
- Drain position: from a side wall to the center of the drain.
- Water lines: the height and spacing of the hot and cold shutoff valves.
Compare these numbers with the vanity's back panel and interior. Cabinets with full drawers have less room for pipes than cabinets with doors. Wall-mounted or floating vanities show more of the space underneath, so the plumbing may be visible.
Faucet hole configurations
If the vanity comes with a countertop and sink, the faucet holes are usually pre-drilled. Match your faucet to them:
- Single hole: one opening for a faucet with a single lever or a spout with handles on one base.
- 4-inch (centerset): three holes with about 4 inches between the centers of the two outer holes, usually for a one-piece faucet on a single base.
- 8-inch (widespread): three holes spread about 8 inches apart, for a spout with two separate handles.
To check, measure from the center of one outer hole to the center of the other. Some single-hole faucets come with a cover plate that hides extra holes on a three-hole sink.
Style and storage
Once the size is settled, think about how you use the bathroom every day.
- Freestanding vanities sit on the floor like a piece of furniture. They offer the most storage and are the simplest to install in place of an old cabinet.
- Wall-mounted (floating) vanities attach to the wall and leave the floor open underneath. They make a small bathroom feel larger and make the floor easier to clean, but the wall must be able to support the weight.
- Drawers or doors: drawers keep small items organized and easy to see. Doors give taller space for cleaning supplies and spare towels.
- Open shelves: handy for rolled towels and baskets, but everything stays on show.
Check whether the vanity includes the countertop, sink and backsplash, or whether you need to buy them separately. Also look at the mirror and lighting above it. Many people choose a mirror a little narrower than the vanity, or two mirrors over a double vanity, one centered above each sink.
Measuring checklist
- Wall width, minus space for the toilet, tub or shower door.
- Depth available, leaving about 30 inches of open floor in front if you can.
- Preferred countertop height for the main users.
- Drain height and position, plus water line locations.
- Faucet hole count and spacing.
- Door swing and drawer clearance.
When your numbers are ready, browse our bathroom vanities and compare width, depth and height on each listing. For lighting around the mirror, take a look at our LED lights and lamps.
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Frequently asked questions
What is the standard height of a bathroom vanity?
Older vanities are often about 30 to 32 inches tall. Comfort-height vanities are about 34 to 36 inches, which is closer to kitchen counter height and many adults find easier to use.
What size vanity do I need for two sinks?
Double vanities usually start at about 48 to 60 inches wide. A 72-inch vanity gives closer to the NKBA-recommended 36 inches between sink centers.
How much space do I need in front of a vanity?
NKBA recommends about 30 inches of clear floor in front of the sink. Many codes allow 21 inches as a minimum, but check your local requirements.
How do I know which faucet fits my vanity top?
Count the holes and measure from the center of one outer hole to the center of the other. One hole fits a single-hole faucet, about 4 inches fits a centerset faucet and about 8 inches fits a widespread faucet.
