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What’s the Standard Faucet Hole Size? Check before you buy!

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When the time comes for you to reinstall a faucet in either your bathroom or kitchen, you need to make sure you know exactly what faucet hole size to get.

Faucets have to fit within your existing countertop space and most of them come with built-in hole sizing. This means that you can’t just go out and buy any faucet–you have to buy the right one.

You need to figure out three numbers:

  1. Faucet hole sizes
  2. Number of holes in your sink
  3. How far apart your faucet holes should be

In this article, we’ll help you figure out exactly what you need.

Faucets may have slight variations in style and size; however, there is usually a way to make your desired kitchen faucet work for you.

Whether you have a standard faucet hole size or not, there’s sure to be an option that’s just right.

Faucet hole sizes for kitchen and bathroom

What are the Standard Faucet Hole Sizes for Kitchens and Bathrooms?

The standard faucet hole size for both kitchen and bathroom faucets is 1.375 inches in diameter. However, this can vary slightly from model to model.

If a faucet is bigger than the standard hole size, this will generally be advertised alongside the product. You may have multiple faucet holes to fill, depending on what sink you choose.

Standard faucet hole sizes for countertops

The standard faucet hole size is 1.375 inches, so you should aim for this diameter if you are drilling a faucet hole into a countertop. Most countertops or sinks with pre-drilled holes will come with the standard sizing already in place.

How to measure your faucet hole size

The easiest way to measure faucet holes is by using a slide caliper. Not only is using a caliper pretty straightforward, but it is also by far the most accurate means of measuring the diameter of a hole.

Put the closed caliper against the inside wall of the faucet hole. Then, slowly begin to slide the scale until the jaw of the caliper reaches the opposite side of the hole.

Then, simply remove the caliper from the faucet hole and note the number presented on the scale – this number is your hole size.

If you don’t have a caliper, you can also use a measuring tape. This is a bit tough to do if you have a faucet already inserted as you can see by my attempt to measure ours.


How Many Faucet Holes Should the Sink Have?

The number of holes required for a faucet installation depends on the model of faucet that you want. Sinks can come up with 1, 2, 3, or 4 holes.

We’ll do a quick breakdown of what a faucet with each number of holes looks like.

Single hole

A single hole faucet spout will have one hole, typically centered on the sink. The faucet is placed into the hole and the handle/spout has an attached handle that controls both hot and cold water.

Two hole

The faucet spout comes with a hole and the second hole is off to the side with a single handle for hot and cold water. These are common for laundry rooms where you may not have much countertop space to drill multiple holes.

Three hole

The faucet spout is placed in the center hole and then there are two more holes on either side for separate hot/cold water handles.

Four hole

These are just like the three hole faucets, but come with an extra fourth hole if you’d like to install a soap dispenser or a separate pull out sprayer.

Smaller sinks may look cramped with four holes, so keep that in mind when planning your ideal sink setup. Be sure to get all your measurements right before beginning the installation process!

How many holes should I have for my kitchen faucet?

Most people end up choosing between a single and three hole faucet. These are the simplest and look the sleekest.

Single hole faucets are common for kitchen faucets so you can easily switch back and forth between hot and cold water.

The fourth hole on a kitchen sink can be handy to provide a side spray which is great to use while you wash the dishes.

How many holes should I have for my bathroom faucet?

Bathroom faucets usually come with a single or three hole faucet.

We love having three hole faucets because they look sleeker and add a bit of class to the design. You can also control the hot and cold water separately.

Single hole bathroom faucets are common too. The spout comes out over the sink and the control lever is usually off to the side or directly on top of the spout.

Some bathrooms will also come with a wall mount so that you can keep as much countertop space as possible. The faucet holes are drilled into the wall and aimed at the sink.


Standard Faucet Hole Spacing

The distance between faucet holes depends on your chosen faucet as well as how you want it to look. The space between the holes primarily comes down to the style and size of the sink that you are using, as well as how many holes will be drilled into the sink.

Regardless of how many holes there are, you want the holes to be as centered in the sink as possible to create a balanced and symmetrical look.

Single Hole vs. Centerset

A single hole is normally placed in the center of the sink. Some exceptions may be in a laundry room where you have it placed to the side.

A centerset faucet is a three hole faucet that is obviously placed in the center of the sink. The main question is how far apart the holes should be in your centerset faucet.

A good rule of thumb to follow is to keep an even number of inches between the holes. The bigger the sink, the larger this gap will likely be. For example, the space between the holes in a center-set sink should be less than the space between the holes of a widespread sink.

We have a full guide that compares the single hole vs centerset faucets.

4 in vs 8 in Faucet (also centerset vs widespread faucets)

Four inch faucet spreads are often centerset faucets, which have three holes – hot and cold water connect to the respective faucets and then come out of the spout, which is fitted into the middle hole.

A four-inch centerset faucet means that there is a four-inch gap between the two furthest away mounting holes.

An 8 inch faucet is a widespread faucet, meaning that the hot/cold water handles are spaced further away from the faucet spout in the middle.

Centerset faucets are ideal for smaller sinks as they create a neat and compact look in both bathrooms and kitchens. In addition, their sleek all-in-one design keeps any home space looking clean and tidy

Read more: 4 inch versus 8 inch faucets


The Ideal Thickness of a Faucet Hole

The thickness of a faucet hole will vary from model to model. The thickness largely depends on the type of faucet that you are installing.

The product will come with specifications, so make sure you check these to ensure that you get the thickness of the faucet hole just right.


Final Verdict

If you’re buying a new faucet, you need make sure to measure you’re buying one that will fit your countertop and sink. If you already have holes drilled, then measure the diameter of the holes and the spacing in between. This will help you find a faucet that fits your bathroom.

If you’re drilling holes yourself, I recommend going with the standard faucet hole size of 1.375 in. For spacing, I recommend a centerset faucet for your bathroom and a single hole in your kitchen.

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