What Size Bathroom Vanity Do I Need? Standard Dimensions Explained

Picking a vanity that's too big makes a bathroom feel cramped; too small and you lose storage and counter space. The good news: a few standard sizes cover almost every bathroom. Here's how to find yours in five minutes.

Standard vanity widths

Vanities are sold mainly by width. The common sizes are:

• 18" to 24" - powder rooms and very tight spaces
• 30" - small full bathrooms
• 36" - the most popular single-sink size; a great balance of counter and storage
• 48" - a generous single sink, or a compact double
• 60" to 72" - true double-sink vanities for primary bathrooms

If you're replacing an existing vanity, matching the current width keeps plumbing and tile work simple.

Standard vanity height

Older vanities sat around 30-32 inches. Today, comfort-height vanities at 34" to 36" are the standard - the same range as a kitchen counter - because they're easier on your back. With young kids, a slightly lower height may make more sense.

The clearances people forget

• 15" minimum from the centerline of the sink to any side wall.
• 15" to 18" from the toilet center to the edge of the vanity.
• Door swing: open your bathroom door fully and confirm it clears the cabinet.
• At least 21" to 30" of clear floor space in front of the vanity.

Single or double?

A single vanity maximizes counter space and works in most bathrooms. A double vanity needs about 60 inches or more but is a game-changer for couples sharing a busy morning. Between 48 and 60 inches, a single sink with extra counter often beats two cramped sinks.

How to measure (the 60-second version)

Measure the wall width where the vanity will go, subtract clearance for side walls, the door swing, and the toilet, note the plumbing location, then choose the largest standard width that fits comfortably - don't fill the space wall to wall.

Still not sure?

Bring your measurements to the Bath Miami showroom at 4525 NW 72nd Ave, Miami, FL 33166, or contact our team at (786) 313-3423. We'll help you find the perfect fit from our full range of bathroom vanities and make sure it works with your plumbing before you buy.