Bathroom Vanity Measurements: Standard Sizes & Heights
Updated: Aug 26
The standard vanity, mirror, lighting, and storage numbers to know
Note: These are industry-standard starting points. Confirm all measurements, clearances, and field conditions with your contractor.
Getting your bathroom vanity measurements right is the difference between a bathroom you love and one you fight every day.
Set the vanity too low and you hunch over the sink every time you wash your face.
Hang the mirror too high and you can't see your face in it.
Put the vanity too close to the door and the door bangs into it every time it opens.
Those are measurement problems, not style problems.
And it's expensive to fix once the plumbing and tile are in.
The numbers follow one simple logic: everything is measured from the finished floor, and each piece depends on the one below it.
The countertop height sets where the backsplash lands, the backsplash sets where the mirror hangs, the mirror sets where the light goes. Decide them in that order and the wall lines up on its own.
Here's the full reference, then the numbers broken down in the order you should decide them: the vanity first (it's the anchor and the hardest thing to change later), then everything above the counter, then storage, and the finishing details.
Standard Vanity Measurements | Starting Points |
Vanity height Finished floor to top of countertop | 34" |
Vanity width Single sink; 60-72" for a double | 30-36" |
Top of backsplash From the finished floor | 38" |
Mirror height With a 4" gap above the backsplash | 32" |
Vanity light fixture Bottom sits 3-4 inches above the mirror | 24" wide |
Medicine cabinet Bottom edge from the floor; check faucet clearance | 42" |
Clear floor space in front 21" minimum; 30"+ is comfortable | 21"+ |
Sink centerline to side wall 15" minimum; 20"+ is comfortable | 15"+ |
1.) Vanity First
Decide the vanity first.
It's the biggest object on the wall, sets the height of everything above it, and is the hardest to move once the plumbing is roughed in.
Vanity Height - 34 Inches
Most adults now use a comfort height of 34-36 inches for their vanities, similar to a kitchen counter so you stand up straighter at the sink.
Measure to the finished top, not the cabinet box.
This includes a thick stone slab, a vessel sink that sits on top of the counter, or a tall backsplash - all add height.
If kids use the bathroom, a lower vanity (30–32 inches) is easier for them to reach, which is why homes with more than one bathroom often keep one shorter vanity.
Vanity Width & Space Around It - 30-36 Inches
Width is how wide the cabinet is: 30-36 inches for a single sink, 60-72 inches for a double.
However, when deciding whether the vanity fits the space, you need to check clearance around the floor and the space needed for a drawer to open.
Leave at least 21 inches of clear floor in front of the vanity so you can stand and bend without backing into the opposite wall (30"+ is comfortable).
Leave at least 15 inches from the center of the sink to the nearest side wall so your elbow isn't jammed against it (20"+ is better).
The most common mistake people make is buying the biggest vanity that fits the wall.
A vanity can fill the wall perfectly and still make the room unusable - if a drawer hits the toilet, or the door bangs into the cabinet when it swings open, the cabinet is too big for the layout no matter what the wall measurement says.
Tight on space? Our 12 designer moves for small bathrooms get into this.
Quick tip before you buy: tape the vanity footprint on the floor and open every nearby door and drawer; the bathroom door, the shower glass, the cabinet doors. If anything collides, size down.
2.) Everything Above the Counter
Once the vanity height is locked in, work your way up to set the rest.
The backsplash, mirror, and light each sit a fixed distance above the one below it, so decide them in that order:
Backsplash
Mirror
Light
Backsplash - Top at 38 Inches
The backsplash is the short strip of counter material that runs up the wall behind the sink.
With a 34-inch countertop, a standard backsplash puts its top edge around 38 inches from the floor.
This line is the reference point for the mirror above it, so lock it in before you place anything higher.
Mirror - 4-Inch Gap, About 32 Inches Tall
Leave a 4-inch gap between the top of the backsplash and the bottom of the mirror.
That gap will:
Keep the mirror from looking like it's sitting on the counter
Give a strip of wall to land on rather than the mirror frame.
A mirror around 32 inches tall fits a standard vanity and leaves room for a light above it.
Center the mirror to the sink, not the cabinet.
If your sink is offset to one side, a mirror centered on the cabinet will look crooked even though it's level.
Vanity Lighting - 24 Inches Wide, 3-4 Inches Above the Mirror
Width: a fixture about 24 inches wide suits a 30–36" vanity; roughly two-thirds to three-quarters of the mirror width, so it looks balanced instead of tacked on.
Height: mount the bottom of the fixture 3-4 inches above the top of the mirror.
Higher than that and the light comes down at a steep angle, casting shadows under your eyes and chin.
Lower than that and you stare straight into the bulbs.
Using sconces on either side of the mirror instead of a bar above it? Mount them at eye level around 75-80 inches from the floor so the light hits your face head-on.
3.) Storage and Finishing Details
Medicine Cabinet - Bottom at 42 Inches (watch the faucet!)
If you're using a medicine cabinet, mount the bottom edge around 42 inches from the floor.
One common mistake I see people make all the time is when they have a tall or arched faucet, which can hit the medicine-cabinet door when it opens.
Be sure to measure the faucet height against the door's swing before installing either.
More things to check that people often forget
Towel bars - mount around 48 inches from the floor (40 inches in a kids' bath) so that you can grab it straight out easily instead of reaching high up.
Toilet paper holder - Place around 26 inches high and 8 to 12 inches in front of the bowl so it's within reach
Robe hooks - Set around 55-70 inches up so a hung robe or towel doesn't drag on the floor.
From Measurements to a Bathroom Plan Ready to Build
Knowing the numbers is the first step.
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Bathroom Vanity Measurement FAQs
What is the standard bathroom vanity height?
Traditional vanities run about 32 inches, but most adults now choose comfort height of roughly 34-36 inches to the top of the countertop so there's less bending at the sink.
Always measure to the finished height because a thick countertop, backsplash, or vessel sink adds to the cabinet box.
A lower vanity around 30–32 inches is friendlier in a kids' bathroom.
How high should a bathroom mirror hang above the vanity?
Leave about a 4-inch gap between the top of the backsplash and the bottom of the mirror.
On a standard 34-inch vanity with a backsplash topping out near 38 inches, that puts the mirror bottom around 42 inches from the floor.
Center the mirror on the sink instead of the cabinet if the sink is offset.
How high should vanity lights be, and what size?
For a fixture mounted above the mirror, set the bottom 3-4 inches above the mirror so the light falls on your face without glare.
Size the fixture to roughly two-thirds to three-quarters of the vanity width; about 24 inches for a 30–36 inch vanity.
If you're using sconces beside the mirror instead, aim for eye level, roughly 75–80 inches from the floor.
How high should a medicine cabinet be mounted?
Mount the bottom edge around 42 inches from the floor.
Before finalizing, check your faucet height against the cabinet-door swing.
Tall or arched faucets can block a medicine-cabinet door, don't forget to check!
How much clearance do you need in front of a bathroom vanity?
Plan for at least 21 inches of clear floor space in front of the vanity; 30 inches or more feels comfortable for standing, bending and opening drawers.
Also keep at least 15 inches from the sink centerline to the nearest side wall (20"+ is better).
What is the standard bathroom vanity width?
Single-sink vanities are typically 30-36 inches wide, with 24-inch options for powder rooms.
For a double vanity, 60 inches is the compact minimum and 72 inches or more is more comfortable for two people.
How high should the backsplash and towel bars be?
With a 34-inch countertop, the top of a standard backsplash sits around 38 inches from the floor.
Towel bars are usually mounted about 48 inches up (or 40 inches in a kids' bath), and the toilet-paper holder around 26 inches high, 8–12 inches in front of the bowl.
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