How to Measure Kitchen Sink Cutout Size

The kitchen sink cutout size refers to the amount of space you need to install a sink. Essentially, the space should be enough to accommodate a sink without being too tight or too loose.

Usually, the kitchen sink cutout size depends on the type of sink you intend to install. For example, over-sinks, which need them to sit on the countertop, need a slightly smaller cutout size than their undermount counterparts.

With a typical kitchen sink measuring 18 x 18 x 12 inches or more, you need to be sure that you have enough space for your project. Keep reading and learn more about measuring the right size for a kitchen sink cutout.

Why Do You Need to Know Kitchen Sink Cutout Size?

Your kitchen sink cutout size determines the size and type of sink you can install. You can select an appropriate sink once you know how large the kitchen sink cutout is.

For instance, undermount sink sizes would need to be a little larger than the cutout you make. That’s because you have to install it below the countertop level.

On the other hand, an overmount sink requires installation onto the countertop. The overlapping sections of the sink create a ridge over the counter.

Therefore, the cutout should be slightly smaller than the sink. Thus, knowing kitchen sink cutout dimensions help you choose the right kitchen sink type and size.

How to Measure Kitchen Sink Cutout Size

How to Measure Kitchen Sink Cutout Size & Dimensions

Measuring a standard kitchen sink cutout size is a straightforward process, especially if you know what to look for. It usually depends on whether you intend to install an undermount or overmount sink.

Accurate measurement of a sink cutout makes it possible for you to install the sink. Besides, kitchen sinks are expensive, and breaking one during installation can be costly.

Getting the correct kitchen sink measurements requires you to have the right tools. The proper combination of tools for this task includes a straight ruler, measuring tape, pencil, and paper. Here is a step-by-step guide on how to measure sink cut out the right way:

Step 1: Measuring the Depth of the Sink

For this step, you can use a ruler or measuring tape. Measure the depth of the old sink so that you can compare it with the new one.

Once you get a perfect match in the sink depth, you can be sure you’ll have a breeze during sink installation.

Step 2: Measuring the Length of the Sink

Now that you know how deep your new sink should be, you should measure the length. Place a tape measure or ruler end-to-end above the sink and do the readings.

This measurement indicated how long your new sink should fit perfectly in place of the old one. The length of the sink should cover the cutout area plus an allowance for overmount or undermount placement.

Step 3: Determining the Width of the Sink

One of the most important considerations in sink installation or replacement is its width. It is the shortest length from one end of the sink to the other and is measured from the top hem.

Put a tape or ruler in place and do the reading. After measuring the kitchen sink width, write the measurements on the piece of paper

Step 4: Get the Width of the Top Hem of the Sink

The hem of the kitchen sink usually has a bigger width than the lower portion. Getting the exact measurement makes it easier for you to install top-mount or drop-in sinks.

For undermount sinks, that measurement isn’t important. You may want to uninstall the old sink before measuring the width from edge to edge.

You need to match this measurement with the kitchen sink cutout size. After removing the sink, you can measure the cutout from the top.

Otherwise, it would help if you went under the sink to measure a kitchen sink. Make sure to get the kitchen sink height right.

Step 5: Measure the Length of Countertop Space

If you’re renovating your kitchen, take time to remove the old sink. As you do it, avoid damaging the countertop. If you need help, ask someone to give you a hand. Place the tape or ruler along with the cutout and write down the reading.

After that, place the take across the sink and take note of the measurements. You may want to hold one end of the tape while your friend has the other.

Step 6: Measure the Width of the Countertop Space

Over-mount sinks are usually attached to the countertop at their hems. Therefore, it’s not enough to measure the length and width of the cutout. Extend a little further than the edges of the cutout to find out the exact area you need to install the new sink.

Please take note of the measurements so that you can use them when purchasing the new sink. If the sink is too wide, it won’t fit into the cutout. On the other hand, a sink with a width that’s too small can’t hold tightly after installation.

Standard Kitchen Sink Cutout Sizes

Standard Kitchen Sink Cutout Sizes

The exercise above aims to get the right kitchen sink cutout dimension. Even though you might not have an outright kitchen sink cutout template, you should have a rough idea of what to expect.

Typical kitchen sinks measure 18 x 18 x 12 inches or more. A kitchen sink could have up to two compartments in a household setting. Such as sink can measure up to 36 inches.

Since you used a ruler to get the measurements, you might have them in centimeters and not inches. In that case, sink cutout dimensions in cm will be at least 46cm x 46cm x 31cm. Be sure to record your measurements to make it easier for the store owner to give you the right sink.

Finally, you can measure the dimensions in millimeters. In that case, the sink cutout dimensions in mm will be 460mm x 460mm by 310mm.

Converting the measurements to millimeters improves the accuracy levels, helping you get it right from the get-go.

Despite the existence of standard sizes for kitchen sinks, the most important consideration when deciding the size of a sink is the size of your kitchen.

A large kitchen may require a large sink, while a small kitchen will do a smaller one.

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Installing a new kitchen sink or replacing an old one shouldn’t be difficult, even for the uninitiated. So long as you have the right tools and take the correct steps, you can get the accurate measurements and use them when purchasing a new sink.

You can get the kitchen sink cutout size by measuring either a tape measure or ruler. The tape measure will give you measurements both in inches and centimeters.

A ruler will do the trick if you want your measurements exclusively in centimeters or millimeters. Follow the steps above to get the right kitchen sink cutout size.

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