What Size Vanity Do I Need for Two Sinks?

The double sink is a lifesaver for some relationships and a convenience for anyone who wants to share more space in their home. However, some people worry that they don’t have enough space for a second sink. But you might have more room than you think because your new vanity may require less space than you realize.

Finding a double vanity made for two sinks is easier than you may think. That starts, of course, with knowing what size you will need. This guide will cover how to measure your space, what size vanities are available, and what factors can help you decide what is best. In no time, you’ll have that extra sink, no matter what size your space might be.

First, let’s talk about that space and how to figure out what you have.

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double sink vanity size

How to Measure Your Bathroom Space for a Vanity

Measuring your space for installing or replacing a vanity is an essential step in the process. You don’t want to take up too much space, but you also don’t want to sell yourself short and settle for less than what you want. There are two main measurements to consider here: depth and width. Depth is important because you don’t want the piece jutting out into the room and taking up too much space. Sometimes, people forget to consider this part.

Typically, bathroom vanities are available in depths of 12, 15, 18, and 21 inches. The standard depth is 21 inches, and a few options are as deep as 24 inches for large spaces and those needing more counter space or storage. Depth depends on the style of vanity that you choose.

The width, of course, is the more critical factor here if you’re in the market for additional space for a second sink.

48 Inch Double Sink Bathroom Vanity in Espresso

48 Inch Double Sink Bathroom Vanity in Espresso

Plumbing: This is the most crucial part of measuring for a new vanity. If your plumbing doesn’t align with the sinks, you will have to choose a different vanity or do a lot more work. Since you’re doing a double sink, you’ll want to measure between the two plumbing access points to know how far apart your sinks can be.

Once you know that, you’ll have a better idea of the width options that are available to you. In some cases, you might have more than one. Plus, if you’re putting in new plumbing for a second sinkthe options open up because you can customize the size and spacing to your exact needs.

Once you measure between the plumbing, you’ll also want to measure from each plumbing fixture out to the wall or as far as you think you want your vanity to go. Combine those numbers to tell you how wide your vanity should be. For example, if the space between the plumbing is 32 inches and you have 8 inches on either side of the plumbing, you’ll want a 48-inch vanity (32 + 8 + 8 = 48).

Related: Bathroom Vanity and Sink Buying Guide

48 Inch Small Double Sink Vanity with Granite or Travertine Top

48 Inch Small Double Sink Vanity with Granite or Travertine Top

If you have a space measuring 50 inches between the plumbing and want to leave a little less than a foot on the outside of each sink, you’ll be good with a 72-inch vanity (50 + 11 + 11 = 72).

The standardization of sizing and plumbing connections helps make this part more straightforward, so don’t stress too much about it.

72 Inch Double Sink Bathroom Vanity in Driftwood Finish

72 Inch Double Sink Bathroom Vanity in Driftwood Finish

Standard Double Sink Vanity Sizes

There are also some standard sizes in the vanity world for single and double vanities. If you are going to have two sinks, experts recommend the following vanity sizes:

  • 48 inches (much less common, but available with limited counter space)
  • 60 inches (very common)
  • 72 inches (very common)
  • 84 inches (growing in popularity for larger spaces)

Suppose you have unusual measurements, misaligned plumbing, or other issues. Consider a custom build in that case, but anything within this range (48 – 84 inches) will provide you with the space you need for dual sinks in your new bathroom vanity.

Related: Why Consider A Floating Bathroom Vanity?

89 Inch Double Sink Bathroom Vanity with Offset Sinks

89 Inch Double Sink Bathroom Vanity with Offset Sinks

Other Considerations

You’ll want to consider how you will use the space and what you want out of a second sink in the bathroom. For example, if you’re outfitting a guest bathroom with a new counter and want a dual sink for style, you might not worry as much about the counter or cabinet space. If, on the other hand, you’re trying to keep your spouse from brushing their teeth over your shoulder in the morning as you fight for the lone sink, space is a prime concern.

Another factor is storage. Are you looking for extra storage space in your endeavor, or is it all about that added sink? Vanity cabinets made for double sinks offer much more storage potential, so you might want to think about that before deciding on your vanity’s size. There are several benefits to adding a second sink to your vanity, and even when you don’t have a ton of space, it’s still possible. All it takes is time, planning, and knowledge of what’s available.

Related: 6 Ways to Maximize Bathroom Space

58 Inch Double Sink Bathroom Vanity in Mango Wood

58 Inch Double Sink Bathroom Vanity in Mango Wood

Benefits of Two Sinks

Two sinks are always better than one – we live in a society obsessed with more, and when it comes to splurging, we’ve learned that it’s best done right at home. We treat ourselves to things like premium bathroom vanities with two sinks and more counter space because we appreciate the little extras like that.

Today, almost all trending bathroom designs focus on double sinks and deluxe comfort. A bathroom is a place where people spend more time than they realize. If your bathroom is due for an upgrade and you think two sinks are the answer, you’ll be happy to know you have many possibilities.

Related: Trending 60 Inch Bathroom Vanities

bathroom remodeling

My name is Julia Ritzenthaler, Founder and President of Unique Vanities, started in 2005. I started this business as an extension of our residential remodeling business, which focused on the design and build of custom cabinetry and architectural trim. I also worked as a financial advisor for 10 years at Ameriprise Financial, helping clients make sound money decisions, including budgeting for home improvement expenses. This expertise led me to start Unique Vanities, which offers a handpicked selection of high quality bathroom vanities, sinks, mirrors and more. You can find me most days sitting in Starbucks, my second office, or in my car driving my daughter across Dallas to gymnastics training.