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

One of my good friends suggested that I write about faucet hole sizes for kitchens and bathrooms. After researching, I wrote this article to share my findings with you.

What are the standard faucet hole sizes for kitchens and bathrooms? The standard faucet hole sizes for kitchens and bathrooms are 1 3/8″ (1.375 Inches or 34.925 mm) in diameter unless otherwise mentioned in the specification. However, faucet holes may vary in size depending on the particular make and model.

I know there can be a lot of confusing information out there. Thus, I have detailed out important information about faucet hole sizes and configurations. Moreover, the information presented is this article pertains to kitchen and bathroom faucets. So, please read on.

Comparison of a Few Faucet Hole Sizes

Faucet hole sizes may differ from the standard 1 3/8″ depending on the particular make and model. To illustrate, below you will find a random list of bathroom and kitchen faucets. In the table below, I have listed the hole size and maximum deck thickness for each model.

BrandPart NumberHole SizeMax Deck Thickness
Moen7594ESRS1 1/4″2 1/2″
American Standard4175.300.0021 3/8″2″
Delta759-CZ-DST1 1/4″ to 1 1/2″3″
KrausKEF-15000ORB1 3/8″ 1 3/8″
KrausKPF-1602SS1 3/8″1 3/8″
BellevuePB-K07CP1 3/8″ to 1 1/2″1 5/8″
Moen7185C1 1/2″ 2 1/2″
Delta9178-RB-DST1 3/8″ 2 1/2″
Delta567LF-PP1 1/4″ to 1 1/2″2 1/4″


Kohler
K-560-VS 1 5/16″ 2 1/2″

As you see in the above table, the standard faucet hole tends to be 1 3/8″ with a slight variation among different models.

The maximum deck thickness plays an important role as well. If the deck is too thick, the faucet may not fit the basin. And, the workaround may result in damaging the faucet hole area of the basin. Thus, it is important to find out the maximum deck thickness for a particular faucet. For this reason, it is best to find this out before purchasing the faucet.

How to Measure the Faucet Hole Size?

The best way to measure the inside diameter of the faucet hole is to use a Slide Caliper. The measuring accuracy for this type of tool ranges from +/- 0.001″ to +/- 0.0015″ (+/- 0.02 mm to +/- 0.04 mm). Thus, using this tool to measure faucet holes would yield in accurate results. 

Venier Caliper
  1. Place the inside jaw of the caliper against the inside of the faucet hole.
  2. Slide the scale outward until it reaches the maximum distance.
  3. Slide the caliper out and the reading indicated would be the size of the faucet hole in diameter.

Standard Faucet Hole Spacing

Faucet hole spacing depends on the mounting configuration for a particular faucet. Furthermore, the standard faucet hole drillings are Single-Hole, Centerset, Minispread or Widespread. And, the other two types that not so common are Vessel and Wall-Mounted.

Single-Hole

The single-hole faucet requires only one hole and is the most common configuration. Yet, if the basin is already drilled with extra holes, escutcheon plates can cover them up.

Single-Hole

Centerset

In a Centerset faucet, the handles are four inches apart from the spout. So, they are three holes combining the spout and two handles on to a single base. Sometimes, the faucet may both the handles mounted onto a single plate that is six inches apart.

Centerset

Minispread

The Minispread and Centerset are more or less the same. The difference being, the spout and handles are not connected by a single plate.

Widespread

The Widespread sink hole configuration are for faucets with three holes. Furthermore, the spout and handles are six to sixteen inches apart.

Widespread

Vessel

The Vessel configuration is for tall faucets. And, the sink is usually higher than for other types. Also, the hole is not drilled into the sink. Usually, they come with a single handle.

Wall-Mounted

The Wall-mounted faucets don’t sit on the sink as their counterparts but are mounted on to the wall. Generally, they come with long spouts for extended reach. And, they must have ample basin clearance.

Related Questions

My faucet hole size is too small for the faucet I purchased recently. What should I do? You have two options. One, to exchange the recently purchased faucet with one that matches the configuration. Or, to increase the hole size to accommodate the purchased faucet. You can either do it yourself using a power drill or hire a professional in your area.

How to cover extra sink holes? You can use escutcheon plates to cover the extra sink holes. If the holes are too far apart, you can use single-hole cover plates to cover them up. Most faucets come with extra cover plates in case you need them.

What Is The Ideal Thickness Of A Faucet Hole? Faucet hole thicknesses can vary from fixture to fixture. Thus, it would be wise to refer to the specification to find out the maximum deck thickness.

How Many Holes Are Required For A Faucet Installation? The number of holes required for a faucet installation depends on the type of fixture. Generally, they tend to range between single to four hole fixtures. Where, the soap dispenser occupies the fourth hole.

Can I drill my own faucet hole? Yes, you can. Choose the appropriate bit for the hole and use a power drill with a guide to do the job. First, make sure you mark exactly where you need to drill. Never drill on the actual sink before practicing a few times on a slab or similar material. Once you get the feel for it, you can drill your sink. Be steady when holding the drill. While drilling, apply pressure gradually, allowing the drill to do the work. See this video.


I hope you found this article useful. Please leave your comments and feedback below.

7 Comments

  1. I have a granite sink with faucet holes of 1 1/8”. Does anyone make a faucet for such a small hole?

    • Hi Mike. Yes, there is. For the kitchen, the Pioneer Faucet Legacy (Model: 2LG261) is one. For a bathroom sink, the Delta Faucet Ara Single-Handle Waterfall (Model: 568LF-MPU) would do. The stylish Brizo Siderna (Model: 65480LF-BN) is yet another one for a bathroom. I’m sure there are more out there for 1 1/8″ holes. I hope you find a nice one to match your granite sink.

  2. Thank you for the reply. I enlarged the holes to 1 3/8” so the faucet we bought worked just fine. Thanks again

  3. Hi Jan:

    I just moved into a house and the kitchen sink has a double sink with two faucets. One faucet is a one-hole, single handle, pull-out mounted in a 1 3/8″ standard hole. The other faucet is a two-hole, single handle system. The control handle is mounted in a 1 3/8″ standard hole, with the water supply running to that control handle. Another tube runs from the single control handle to the spout. However, the spout is mounted in a 3/4″ (or maybe 13/16″) hole – it is so tiny! I cannot find any replacement systems. Any thoughts on this 3/4″ (or maybe 13/16″) countertop hole?

    • Hi Steve. Finding a replacement for that hole size and sink configuration can indeed be a challenge. I would suggest covering the small hole and going for another single-handle single-hole (standard size) faucet. This is what I would do if I were you. Please let me know what you decided to do finally.

      • Jan –

        Thanks – that was what I was thinking after talking to a plumber and not being able to find a convenient faucet replacement that fits in that tiny hole. Plugged the smaller hole with a chrome cap that cost all of 2 dollars and installed a high arch Delta faucet in the remaining hole and now everything is working great. Thanks for the input!

        • You’re very welcome Steve! That was indeed the best solution and I’m glad everything is working great. Thanks for the update.

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